APA (7th ed.) Citation

Hamzah & Yeang, Balfour, A., & Richards, I. (1994). Bioclimatic skyscrapers. Ellipsis.

Chicago Style (17th ed.) Citation

Hamzah & Yeang, Alan Balfour, and Ivor Richards. Bioclimatic Skyscrapers. London: Ellipsis, 1994.

MLA (9th ed.) Citation

Hamzah & Yeang, et al. Bioclimatic Skyscrapers. Ellipsis, 1994.