Cita APA (7th ed.)
Schaeffer, F. A. (1990). Trilogy: The three essential books in volume. Crossway Books.
Cita Chicago (17th ed.)
Schaeffer, Francis A. Trilogy: The Three Essential Books in Volume. Illinois: Crossway Books, 1990.
Cita MLA (9th ed.)
Schaeffer, Francis A. Trilogy: The Three Essential Books in Volume. Crossway Books, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.