Outcalt, J. (2005). Ready to go youth group activities: 101 games, puzzles, quizzes, and ideas for busy leaders. Abingdon Press.
Chicago-viite (17. p.)Outcalt, John. Ready to Go Youth Group Activities: 101 Games, Puzzles, Quizzes, and Ideas for Busy Leaders. Nashville, Tenn.: Abingdon Press, 2005.
MLA-viite (9. p.)Outcalt, John. Ready to Go Youth Group Activities: 101 Games, Puzzles, Quizzes, and Ideas for Busy Leaders. Abingdon Press, 2005.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.