Gaya APA

Rensburg, W, V. (1986). Strategic Minerals, Vol II : Major Mineral-Consuming Regions of The World (issues and strategies) . : Prentice Hall Inc..

Gaya MLA

Rensburg, W.C.J, Van. "Strategic Minerals, Vol II : Major Mineral-Consuming Regions of The World (issues and strategies)". : Prentice Hall Inc., 1986. Text.