APA Citation

 Knowles, R. L. (2006).  Ritual house: Drawing on nature’s rhythms for architecture and urban design.  Island Press.

Chicago Style Citation

 Knowles, Ralph L.  Ritual House: Drawing On Nature’s Rhythms for Architecture and Urban Design.  Island Press, 2006.

MLA Citation

 Knowles, Ralph L.  Ritual House: Drawing On Nature’s Rhythms for Architecture and Urban Design.  Island Press, 2006.

Warning: These citations may not always be 100% accurate.