Παραπομπή APA

Leigh, R. W. (1990). Auto CAD: :A concise guide to commands and features. Galgotia.

Παραπομπή Chicago Style

Leigh, Ronald W. Auto CAD: :A Concise Guide to Commands and Features. New Delhi: Galgotia, 1990.

Παραπομπή MLA

Leigh, Ronald W. Auto CAD: :A Concise Guide to Commands and Features. Galgotia, 1990.