APA aipamena

(1998). The World almanac and book of facts, 1999. World Almanac Books.

Chicago Style aipamena

The World Almanac and Book of Facts, 1999. Mahwah, N.J: World Almanac Books, 1998.

MLA aipamena

The World Almanac and Book of Facts, 1999. World Almanac Books, 1998.