Παραπομπή σε μορφή APA (7η εκδ.)

Weale, J. (1982). Tramp Shipping Arithmetic: The application of the programmable calculator to commercial problems. Fairplay Publications.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Weale, John. Tramp Shipping Arithmetic: The Application of the Programmable Calculator to Commercial Problems. London: Fairplay Publications, 1982.

Παραπομπή σε μορφή MLA (9th εκδ.)

Weale, John. Tramp Shipping Arithmetic: The Application of the Programmable Calculator to Commercial Problems. Fairplay Publications, 1982.