APA (7th ed.) Zitazioa

Wiersbe, W. W. (1974). Be joyful: A practical study of Philippians. Victor Books.

Chicago Style (17th ed.) Zitazioa

Wiersbe, Warren W. Be Joyful: A Practical Study of Philippians. Wheaton, Ill.: Victor Books, 1974.

MLA (9th ed.) Zitazioa

Wiersbe, Warren W. Be Joyful: A Practical Study of Philippians. Victor Books, 1974.