APA (7th ed.) Citation

Sarton, M., & Knotts, H. (1974). Punch's secret (First edition.). Harper & Row.

Chicago Style (17th ed.) Citation

Sarton, May, and Howard Knotts. Punch's Secret. First edition. New York: Harper & Row, 1974.

MLA (8th ed.) Citation

Sarton, May, and Howard Knotts. Punch's Secret. First edition. Harper & Row, 1974.