APA (7th ed.) Citation

Gray, J. A. (1975). Elements of a two-process theory of learning / (by) J.A. Gray. Academic Press.

Chicago Style (17th ed.) Citation

Gray, Jeffrey A. Elements of a Two-process Theory of Learning / (by) J.A. Gray. London (etc.): Academic Press, 1975.

MLA (9th ed.) Citation

Gray, Jeffrey A. Elements of a Two-process Theory of Learning / (by) J.A. Gray. Academic Press, 1975.

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