APA (7th ed.) Citation

Ingersoll, R. (1946). Top secret. Harcourt Brace.

Chicago Style (17th ed.) Citation

Ingersoll, Ralph. Top Secret. New York, N.Y: Harcourt Brace, 1946.

MLA (8th ed.) Citation

Ingersoll, Ralph. Top Secret. Harcourt Brace, 1946.