Παραπομπή APA

Hepple, P. (1967). A glossary of petroleum terms (4th ed. , revised and enlarged.). London: The Institute of Petroleum.

Παραπομπή Chicago Style

Hepple, Peter. A Glossary of Petroleum Terms. 4th ed. , revised and enlarged. London: The Institute of Petroleum, 1967.

Παραπομπή MLA

Hepple, Peter. A Glossary of Petroleum Terms. 4th ed. , revised and enlarged. London: The Institute of Petroleum, 1967.

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