APA aipamena

Encyclopedia Britannica, Inc. (1990). Britannica book of the year 1990. Encyclopedia Brittanica, Inc.

Chicago Style aipamena

Encyclopedia Britannica, Inc. Britannica Book of the Year 1990. Chicago: Encyclopedia Brittanica, Inc, 1990.

MLA aipamena

Encyclopedia Britannica, Inc. Britannica Book of the Year 1990. Encyclopedia Brittanica, Inc, 1990.