Hopkinson, R. G., & Kay, J. D. (1969). The lighting of buildings. Frederick A. Praeger.
Cita Chicago (17th ed.)Hopkinson, R. G., i J. D. Kay. The Lighting of Buildings. Nueva York: Frederick A. Praeger, 1969.
Cita MLA (9th ed.)Hopkinson, R. G., i J. D. Kay. The Lighting of Buildings. Frederick A. Praeger, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.