Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.