APA引文

John Paul II, P. (1980). Christ tells youth how to be happy. Daughters of St. Paul.

Chicago Style (17th ed.) Citation

John Paul II, Pope. Christ Tells Youth How to Be Happy. Boston, Mass.: Daughters of St. Paul, 1980.

MLA引文

John Paul II, Pope. Christ Tells Youth How to Be Happy. Daughters of St. Paul, 1980.