Cita APA (7th ed.)
Peters, D., Peters, S., & Merrill, C. (1984). Why knock rock? Bethany House Publishers.
Cita Chicago (17th ed.)
Peters, Dan, Steve Peters, i Cher Merrill. Why Knock Rock? Minneapolis, Minn.: Bethany House Publishers, 1984.
Cita MLA (9th ed.)
Peters, Dan, et al. Why Knock Rock? Bethany House Publishers, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.