Gaya APA

Swanson, C, P., Beardsley, M, C. (1956). Thinking straight principles of reasoning for readers and writers . United States of America: Prentice-Hall.

Gaya MLA

Swanson, Carl, P.., Beardsley, Monroe, C. "Thinking straight principles of reasoning for readers and writers". United States of America: Prentice-Hall, 1956. Text.