APA (7th ed.) Citation

Knovel (Firm), MacGregor, D. S., Moody, R., & Clark-Lowes, D. D. (1998). Petroleum geology of North Africa. Geological Society.

Chicago Style (17th ed.) Citation

Knovel (Firm), D. S. MacGregor, Richard Moody, and D. D. Clark-Lowes. Petroleum Geology of North Africa. London: Geological Society, 1998.

MLA (9th ed.) Citation

Knovel (Firm), et al. Petroleum Geology of North Africa. Geological Society, 1998.