APA način citiranja

Edward O. Gangstad, & N/a. (1990). Natural Resource Management of Water and Land. New York: Van Nostrand Reinhold.

Čikaški stil citiranja

Edward O. Gangstad, i N/a. Natural Resource Management of Water and Land. New York: Van Nostrand Reinhold, 1990.

MLA način citiranja

Edward O. Gangstad, i N/a. Natural Resource Management of Water and Land. New York: Van Nostrand Reinhold, 1990.