APA (7th ed.) Citation

Forbes, R. J. (1958). Studies in early petroleum history. E. J. Brill.

Chicago Style (17th ed.) Citation

Forbes, R. J. Studies in Early Petroleum History. Leiden: E. J. Brill, 1958.

MLA (8th ed.) Citation

Forbes, R. J. Studies in Early Petroleum History. E. J. Brill, 1958.

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