APA aipamena

Harrison, J. (1970). Secretarial Duties (2nd ed.). Pitman.

Chicago Style aipamena

Harrison, John. Secretarial Duties. 2nd ed. london: Pitman, 1970.

MLA aipamena

Harrison, John. Secretarial Duties. 2nd ed. Pitman, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.