Hefley, M. (1980). God called: A family answered. Cross Roads Books.
Chicago Style (17th ed.) ZitazioaHefley, Marti. God Called: A Family Answered. Atlanta: Cross Roads Books, 1980.
MLA (9th ed.) ZitazioaHefley, Marti. God Called: A Family Answered. Cross Roads Books, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.