http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=4644779 - Engineering bibliographies - in Harvard style

In-text: (Feng et al., 2007)

Your Bibliography: Feng, N., Michel, J., Zeng, L., Liu, J., Hong, C., Kimerling, L. and Duan, X., 2007. Design of Highly Efficient Light-Trapping Structures for Thin-Film Crystalline Silicon Solar Cells. IEEE Trans. Electron Devices, 54(8), pp.1926-1933.

In-text: (Kazmi, Goto, Ichinokura and Guo, 2009)

Your Bibliography: Kazmi, S., Goto, H., Ichinokura, O. and Guo, H., 2009. An improved and very efficient MPPT controller for PV systems subjected to rapidly varying atmospheric conditions and partial shading. Power Engineering Conference, 2009. AUPEC 2009. Australasian Universities, [online] pp.1-6. Available at: <http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=5356592&queryText%3Dmppt+controller> [Accessed 6 February 2015].

In-text: (Krauter and Ochs, 2003)

Your Bibliography: Krauter, S. and Ochs, F., 2003. An integrated solar home system-history. Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference on, [online] 2, pp.2094-2097 Vol.2. Available at: <http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=1306362&queryText%3Dsolar+sun+home+system+history> [Accessed 6 February 2015].

In-text: (Treble, 1980)

Your Bibliography: Treble, F., 1980. Solar cells. IEE Proc. A Phys. Sci. Meas. Instrum. Manage. Educ. Rev. UK, 127(8), p.505.