APA aipamena

(1971). The Writers directory, 1971-73. St. Martin's.

Chicago Style aipamena

The Writers Directory, 1971-73. New York: St. Martin's, 1971.

MLA aipamena

The Writers Directory, 1971-73. St. Martin's, 1971.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.