Παραπομπή APA

Watkins, R. N. (1973). Petroleum Refinery Distillation Taxas. Gulf Publishing.

Παραπομπή Chicago Style

Watkins, R. N. Petroleum Refinery Distillation Taxas. Taxas: Gulf Publishing, 1973.

Παραπομπή MLA

Watkins, R. N. Petroleum Refinery Distillation Taxas. Gulf Publishing, 1973.