GPS and math - Math bibliographies - in Harvard style

In-text: (Chomsky, 2012)

Your Bibliography: Chomsky, N., 2012. Tomgram: Noam Chomsky, "The Most Dangerous Moment," 50 Years Later | TomDispatch. [online] Tomdispatch.com. Available at: <http://www.tomdispatch.com/post/175605/tomgram%3A_noam_chomsky,_%22the_most_dangerous_moment,%22_50_years_later> [Accessed 8 June 2014].

In-text: (Google Maps, 2015)

Your Bibliography: Google Maps. 2015. Google Maps. [online] Available at: <https://www.google.com/maps?hl=en> [Accessed 15 February 2015].

In-text: (GPS coordinates Google Maps, latitude and longitude, 2015)

Your Bibliography: Gps-coordinates.net. 2015. GPS coordinates Google Maps, latitude and longitude. [online] Available at: <http://www.gps-coordinates.net/> [Accessed 15 February 2015].

In-text: (Kennedy and Sandler, 2013)

Your Bibliography: Kennedy, J. and Sandler, M., 2013. The letters of John F. Kennedy. London: Bloomsbury.

In-text: (Kennedy, 1969)

Your Bibliography: Kennedy, R., 1969. Thirteen days. New York: W.W. Norton.

In-text: (Luethye, 2013)

Your Bibliography: Luethye, R., 2013. The Cold War, Cuban Missile Crisis & Communism: Intelligence Secrets Revealed-Indications. Smashwords.

In-text: (Munton and Welch, 2007)

Your Bibliography: Munton, D. and Welch, D., 2007. The Cuban Missile Crisis. New York: Oxford University Press.

In-text: (Polmar and Gresham, 2006)

Your Bibliography: Polmar, N. and Gresham, J., 2006. Defcon-2: Standing on the Brink of Nuclear War during the Cuban Missile Crisis. Hoboken, N.J.: Wiley.

In-text: (Taubman, 2003)

Your Bibliography: Taubman, W., 2003. Khrushchev: The Man and His Era. New York: Norton.

In-text: (Walsh, 1996)

Your Bibliography: Walsh, B., 1996. Modern world history. LONDON: Joh Murray.

In-text: (Global Positioning System, 2015)

Your Bibliography: Wikipedia. 2015. Global Positioning System. [online] Available at: <http://en.wikipedia.org/wiki/Global_Positioning_System> [Accessed 15 February 2015].

In-text: (Zogg, 2002)

Your Bibliography: Zogg, J., 2002. GPS Basics. 1st ed. [ebook] Thalwil: u-blox ag, p.13. Available at: <http://geology.isu.edu/geostac/Field_Exercise/GPS/GPS_basics_u_blox_en.pdf> [Accessed 16 February 2015].