Cita APA (7th ed.)

Robinson, D. S. 1. (1929). The principles of reasoning: An introduction to logic and scientific method. D. Appleton-Century Co.

Cita Chicago (17th ed.)

Robinson, Daniel Sommer 1888. The Principles of Reasoning: An Introduction to Logic and Scientific Method. New York: D. Appleton-Century Co, 1929.

Cita MLA (9th ed.)

Robinson, Daniel Sommer 1888. The Principles of Reasoning: An Introduction to Logic and Scientific Method. D. Appleton-Century Co, 1929.