Freese, H. (1941). First steps to God: An illustrated first communion catechism. Catechetical Guild.
Chicago-viite (17. p.)Freese, Henry. First Steps to God: An Illustrated First Communion Catechism. St. Paul, Minn.: Catechetical Guild, 1941.
MLA-viite (8. p.)Freese, Henry. First Steps to God: An Illustrated First Communion Catechism. Catechetical Guild, 1941.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.