APA (7th ed.) Citation

Earl, A., & Earl, R. (1971). How shall I teach history? / Alan Earl, Roland Earl. Blackwell.

Chicago Style (17th ed.) Citation

Earl, Alan, and Roland Earl. How Shall I Teach History? / Alan Earl, Roland Earl. Oxford: Blackwell, 1971.

MLA (9th ed.) Citation

Earl, Alan, and Roland Earl. How Shall I Teach History? / Alan Earl, Roland Earl. Blackwell, 1971.

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