Παραπομπή APA

Tseng G. (1997). Handbook of reference of Information services. Crest publishing.

Παραπομπή Chicago Style

Tseng G. Handbook of Reference of Information Services. New Delhi: Crest publishing, 1997.

Παραπομπή MLA

Tseng G. Handbook of Reference of Information Services. Crest publishing, 1997.