Gaya APA

Higgins, J, M. (1989). Strategic management : text and cases 4th (4th ed.). Hinsdale, IL: Dryden Press, c.

Gaya MLA

Higgins, James, M.. "Strategic management : text and cases 4th". 4th ed. Hinsdale, IL: Dryden Press, c, 1989. Buku Wajib.