Παραπομπή APA

Costigan, D. M. (1978). Electronic delivery of documents and grpahics.

Παραπομπή Chicago Style

Costigan, Daniel M. Electronic Delivery of Documents and Grpahics. Van Nostrand Reinhold Co., New York, 1978.

Παραπομπή MLA

Costigan, Daniel M. Electronic Delivery of Documents and Grpahics. 1978.