APA (7e ed.) Bronvermelding

Boyd, R. (2003). Critical reasoning and logic. Prentice Hall.

Chicago (17e ed.) Bronvermelding

Boyd, Robert. Critical Reasoning and Logic. Upper Saddle River, New Jersey: Prentice Hall, 2003.

MLA (9e ed.) Bronvermelding

Boyd, Robert. Critical Reasoning and Logic. Prentice Hall, 2003.