APA Style

Macmillan, ., Twist, C. (1991). Macmillan Encyclopedia of Science 7 : the Environment Ecology. Pollution. and Agriculture . New York: MCMILLAN.

MLA Style

Macmillan, ., Twist, Clint.. "Macmillan Encyclopedia of Science 7 : the Environment Ecology. Pollution. and Agriculture". New York: MCMILLAN, 1991. Buku.