2000 BRITANNICA BOOK OF THE YEAR. (2000). 2000 britannica book of the year: Events of 1999. Encyclopaedia Britannica.
Cita Chicago (17th ed.)2000 BRITANNICA BOOK OF THE YEAR. 2000 Britannica Book of the Year: Events of 1999. Chicago: Encyclopaedia Britannica, 2000.
Cita MLA (9th ed.)2000 BRITANNICA BOOK OF THE YEAR. 2000 Britannica Book of the Year: Events of 1999. Encyclopaedia Britannica, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.