APA (7th ed.) Citation

Leonard, J. N. (1972). Crusaders of chemistry: Six makers of the modern world. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Leonard, Jonathan Norton. Crusaders of Chemistry: Six Makers of the Modern World. Freeport, N.Y: Books for Libraries Press, 1972.

MLA (9th ed.) Citation

Leonard, Jonathan Norton. Crusaders of Chemistry: Six Makers of the Modern World. Books for Libraries Press, 1972.

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