Παραπομπή APA

Wadden, A. L. (1968). Chemical From Petroleum, an Introductory Survey. English Language Book Society.

Παραπομπή Chicago Style

Wadden, A. Lawrence. Chemical From Petroleum, an Introductory Survey. London: English Language Book Society, 1968.

Παραπομπή MLA

Wadden, A. Lawrence. Chemical From Petroleum, an Introductory Survey. English Language Book Society, 1968.