Παραπομπή APA

Swann, P. D. a. O. (1976). Extraction of Useful Chemical Derviatives form Coal. M.S.S. Information Corporation.

Παραπομπή Chicago Style

Swann, Philip D. and Others. Extraction of Useful Chemical Derviatives Form Coal. New York: M.S.S. Information Corporation, 1976.

Παραπομπή MLA

Swann, Philip D. and Others. Extraction of Useful Chemical Derviatives Form Coal. M.S.S. Information Corporation, 1976.