Παραπομπή APA

Columbus, L. (1992). Learn harvard graphics 3.0 in a day. BPB Publications.

Παραπομπή Chicago Style

Columbus, Louis. Learn Harvard Graphics 3.0 in a Day. New Delhi: BPB Publications, 1992.

Παραπομπή MLA

Columbus, Louis. Learn Harvard Graphics 3.0 in a Day. BPB Publications, 1992.