APA Citation

Hughes, W. E. (2016). Fundamentals of international oil & gas law. Tulsa, Oklahoma: PennWell.

Chicago Style Citation

Hughes, William E. Fundamentals of International Oil & Gas Law. Tulsa, Oklahoma: PennWell, 2016.

MLA Citation

Hughes, William E. Fundamentals of International Oil & Gas Law. Tulsa, Oklahoma: PennWell, 2016.

Warning: These citations may not always be 100% accurate.