APA (7th ed.) Citation

Jennings, C. R. (1965). Dr. Seuss: 'What am I doing here?'. Saturday Evening Post, 238(21), 105.

Chicago Style (17th ed.) Citation

Jennings, C. Robert. "Dr. Seuss: 'What Am I Doing Here?'." Saturday Evening Post 238, no. 21 (1965): 105.

MLA (9th ed.) Citation

Jennings, C. Robert. "Dr. Seuss: 'What Am I Doing Here?'." Saturday Evening Post, vol. 238, no. 21, 1965, p. 105.