Gaya APA

acmillan, . (1997). Macmillan Revised Encyclopedia of Sceince ; The Environment, Ecology, Pollution and Agriculture . New York: Macmillan Reference USA.

Gaya MLA

acmillan, . "Macmillan Revised Encyclopedia of Sceince ; The Environment, Ecology, Pollution and Agriculture". New York: Macmillan Reference USA, 1997. Text.