Houghton-Evans, W., Turrent, D., Whittaker, C., Palz, W., & Steemers, T. C. (1981). Solar houses in Europe: How they have worked. Oxford: Pergamon Press.

Houghton-Evans, W., D. Turrent, C. Whittaker, W. Palz, and T. C. Steemers. Solar Houses in Europe: How They Have Worked. Oxford: Pergamon Press, 1981.

Houghton-Evans, W., et al. Solar Houses in Europe: How They Have Worked. Oxford: Pergamon Press, 1981.