APA

(1986). Primary commodities : problems and prospects. Kuala Lumpur: 20939.

Chicago

1986. Primary commodities : problems and prospects. Kuala Lumpur: 20939.

Harvard

(1986). Primary commodities : problems and prospects. Kuala Lumpur: 20939.

MLA

Primary commodities : problems and prospects. Kuala Lumpur: 20939. 1986.