Lua APA (7ú heag.)
Peters, D., Peters, S., & Merrill, C. (1984). Why knock rock? Bethany House Publishers.
Lua i Stíl Chicago (17ú heag.)
Peters, Dan, Steve Peters, agus Cher Merrill. Why Knock Rock? Minneapolis, Minn.: Bethany House Publishers, 1984.
Lua MLA (9ú heag.)
Peters, Dan, et al. Why Knock Rock? Bethany House Publishers, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.