APA aipamena

Townsend, C. (1992). Mastering dBase IV programming. Sybex, Illinois.

Chicago Style aipamena

Townsend, Carl. Mastering DBase IV Programming. San Francisco : Glencoe: Sybex, Illinois, 1992.

MLA aipamena

Townsend, Carl. Mastering DBase IV Programming. Sybex, Illinois, 1992.