APA (7th ed.) Citation

Trevelyon, G. M., & Carr, J. L. (1968). What is History? Penguin.

Chicago Style (17th ed.) Citation

Trevelyon, George Macaulay, and Jayne L. Carr. What Is History? Middlesex: Penguin, 1968.

MLA (9th ed.) Citation

Trevelyon, George Macaulay, and Jayne L. Carr. What Is History? Penguin, 1968.

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