(1975). 1975 Britannica book of the year. Encyclopaedia Britannica.
Cita Chicago (17th ed.)1975 Britannica Book of the Year. Encyclopaedia Britannica, 1975.
Cita MLA (9th ed.)1975 Britannica Book of the Year. Encyclopaedia Britannica, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.