APA (7th ed.) Citation

Franck, F. (1967). I love life!: Said Pope John XXIII. St. Martin's Press.

Chicago Style (17th ed.) Citation

Franck, Frederick. I Love Life!: Said Pope John XXIII. New York: St. Martin's Press, 1967.

MLA (9th ed.) Citation

Franck, Frederick. I Love Life!: Said Pope John XXIII. St. Martin's Press, 1967.

Warning: These citations may not always be 100% accurate.