Gaya APA

acmillan, . (1997). Macmillan Revised Encyclopedia of Science ; The Earth, Our Planet - it Land, Sea, and Air . New York: Macmillan Reference USA.

Gaya MLA

acmillan, . "Macmillan Revised Encyclopedia of Science ; The Earth, Our Planet - it Land, Sea, and Air". New York: Macmillan Reference USA, 1997. Text.