Cita APA (7th ed.)
Robertson, P. (1984). Answers to 200 of life's most probing questions. T. Nelson.
Cita Chicago (17th ed.)
Robertson, Pat. Answers to 200 of Life's Most Probing Questions. Nashville: T. Nelson, 1984.
Cita MLA (9th ed.)
Robertson, Pat. Answers to 200 of Life's Most Probing Questions. T. Nelson, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.