Παραπομπή APA

Townsend, C. (1989). Mastering dbase IV programming. BPB Publications.

Παραπομπή Chicago Style

Townsend, Carl. Mastering Dbase IV Programming. New Delhi: BPB Publications, 1989.

Παραπομπή MLA

Townsend, Carl. Mastering Dbase IV Programming. BPB Publications, 1989.