APA Citation

(1993). 1993 Britannica book of the year. (15th ed.). Chicago: Encyclopaedia Britannica, Inc..

Chicago Style Citation

1993 Britannica Book of the Year. 15th ed. Chicago: Encyclopaedia Britannica, Inc., 1993.

MLA Citation

1993 Britannica Book of the Year. 15th ed. Chicago: Encyclopaedia Britannica, Inc., 1993.

Warning: These citations may not always be 100% accurate.