Gaya APA

Guth, W, D. (1986). Handbook of business strategy 1986/1987 yearbook . Boston: Warren, Gorham & Lamont.

Gaya MLA

Guth, William, D.. "Handbook of business strategy 1986/1987 yearbook". Boston: Warren, Gorham & Lamont, 1986. Buku/Printed Material.