APA (7th ed.) Citation

Cowan, H. J., & Smith, P. R. (1983). Enviromental systems. Van Nostrand Reinhold Comp.

Chicago Style (17th ed.) Citation

Cowan, Henry J., and Peter R. Smith. Enviromental Systems. Van Nostrand Reinhold Comp, 1983.

MLA (8th ed.) Citation

Cowan, Henry J., and Peter R. Smith. Enviromental Systems. Van Nostrand Reinhold Comp, 1983.

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