Παραπομπή σε μορφή APA (7η εκδ.)

Walker, F. R. (1952). Practical accounting and cost keeping for contractors; a treatise on modern business methods. F. R. Walker Co.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Walker, Frank Rabold. Practical Accounting and Cost Keeping for Contractors; a Treatise on Modern Business Methods. Chicago: F. R. Walker Co, 1952.

Παραπομπή σε μορφή MLA (9th εκδ.)

Walker, Frank Rabold. Practical Accounting and Cost Keeping for Contractors; a Treatise on Modern Business Methods. F. R. Walker Co, 1952.