Gaya APA

Encyclopaedia Britannica : 1988 Britannica Book of the year: Events of 1987 /By Encyclopedia Britannica. (1988). Chigago: Encyclopeadi Britannica,1987.

Gaya MLA

Encyclopaedia Britannica : 1988 Britannica Book of the year: Events of 1987 /By Encyclopedia Britannica. . Chigago: Encyclopeadi Britannica,1987, 1988. Text.