Cita APA

(1969). 1969 yearbook covering the year 1968. New York: Crowell-Collier.

Chicago Style Citation

1969 Yearbook Covering the Year 1968. New York: Crowell-Collier, 1969.

Cita MLA

1969 Yearbook Covering the Year 1968. New York: Crowell-Collier, 1969.

Atenció: Aquestes cites poden no estar 100% correctes.