Gaya APA

Kerrod, R. (1991). Macmillan encyclopedia of science: tools and tomorrow [vol.12] (12). New York: Macmillan Reference USA.

Gaya MLA

Kerrod, Robin. "Macmillan encyclopedia of science: tools and tomorrow [vol.12]". 12 New York: Macmillan Reference USA, 1991. Text.