APA (7th ed.) Citation

Longford, F. P., Longford, F. A. P., & Johannes Paul, I. (1982). Pope John Paul II: An authorized biography. Joseph.

Chicago Style (17th ed.) Citation

Longford, Frank Pakenham, Francis Aungier Pakenham Longford, and II Johannes Paul. Pope John Paul II: An Authorized Biography. London: Joseph, 1982.

MLA (8th ed.) Citation

Longford, Frank Pakenham, et al. Pope John Paul II: An Authorized Biography. Joseph, 1982.

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