APA استشهاد

Dorf, R. C. (1978). Energy resources and policy. Addison Wesley.

استشهاد بنمط شيكاغو

Dorf, Richard C. Energy Resources and Policy. Reading: Addison Wesley, 1978.

MLA استشهاد

Dorf, Richard C. Energy Resources and Policy. Addison Wesley, 1978.