APA (7th ed.) Citation

Varma, V. P., & Pringle, M. K. (1972). Advances in educational psychology. University of London.

Chicago Style (17th ed.) Citation

Varma, Ved P., and Mia K. Pringle. Advances in Educational Psychology. London: University of London, 1972.

MLA (9th ed.) Citation

Varma, Ved P., and Mia K. Pringle. Advances in Educational Psychology. University of London, 1972.