Cita APA

(1972). Britannica book of the year 1972. Chicago: Encyclpedia Britannica.

Chicago Style Citation

Britannica Book of the Year 1972. Chicago: Encyclpedia Britannica, 1972.

Cita MLA

Britannica Book of the Year 1972. Chicago: Encyclpedia Britannica, 1972.

Atenció: Aquestes cites poden no estar 100% correctes.