AM modulation - Engineering bibliographies - in Harvard style

In-text: (Communication Principles, 2015)

Your Bibliography: 2015. Communication Principles. 1st ed. [ebook] Available at: <http://www.academia.edu/5892351/Chapter_2_Amplitude_Modulation_AM_Transmission_and_Reception_BENT_3113_Communication_Principles_23_2.3_AM_Modulating_Circuits_AM_Modulators> [Accessed 10 February 2015].

In-text: (2015)

Your Bibliography: Google.co.uk. 2015. [online] Available at: <http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCcQFjAB&url=http%3A%2F%2Fwww.electronics.dit.ie%2Fstaff%2Ftfreir%2FCOMM1208%2FCOMM1208_Unit3_AM.doc&ei=6zXbVLb2Asn3UuivgdgJ&usg=AFQjCNFO55JYcWtxc6VYKDC02nI6wamknA&bvm=bv.85761416,d.d2s> [Accessed 11 February 2015].

In-text: (Modulation Index | AM, Amplitude Modulation Depth | Radio-Electronics.com, 2015)

Your Bibliography: Radio-electronics.com. 2015. Modulation Index | AM, Amplitude Modulation Depth | Radio-Electronics.com. [online] Available at: <http://www.radio-electronics.com/info/rf-technology-design/am-amplitude-modulation/modulation-index-depth.php> [Accessed 11 February 2015].

In-text: (Synchronous Demodulation | AM Synchronous Detection | Radio-Electronics.com, 2015)

Your Bibliography: Radio-electronics.com. 2015. Synchronous Demodulation | AM Synchronous Detection | Radio-Electronics.com. [online] Available at: <http://www.radio-electronics.com/info/rf-technology-design/am-reception/synchronous-demodulator-demodulation-detector.php> [Accessed 11 February 2015].