Tohutoro APA (7th ed.)

Whitehead, G. (1982). Commerce made simple. Made Simple Books.

Tohutoru Kātū Chicago (17th ed.)

Whitehead, G.M. Commerce Made Simple. Heinemann: Made Simple Books, 1982.

Tohutoro MLA (9th ed.)

Whitehead, G.M. Commerce Made Simple. Made Simple Books, 1982.