Cita APA (7a ed.)

Speight, J. G. (2013). Heavy and extra-heavy oil upgrading technologies. Gulf Professional Publishing.

Cita Chicago Style (17a ed.)

Speight, James G. Heavy and Extra-heavy Oil Upgrading Technologies. Oxford ; Waltham, MA: Gulf Professional Publishing, 2013.

Cita MLA (8a ed.)

Speight, James G. Heavy and Extra-heavy Oil Upgrading Technologies. Gulf Professional Publishing, 2013.