APA (7e ed.) Bronvermelding

COWAN, H. J., & SMITH, P. R. (1983). Environmental systems. Van Nostrand Reinhold.

Chicago (17e ed.) Bronvermelding

COWAN, Henry J., en Peter R. SMITH. Environmental Systems. New York: Van Nostrand Reinhold, 1983.

MLA (9e ed.) Bronvermelding

COWAN, Henry J., en Peter R. SMITH. Environmental Systems. Van Nostrand Reinhold, 1983.