Цитирование APA (7-е изд.)
Kreeft, P. (1990). Everything you wanted to know about heaven... but never dreamed of asking (First complete edition.). Ignatius Press.
Цитирование в стиле Чикаго (17-е изд.)
Kreeft, Peter. Everything You Wanted to Know About Heaven... but Never Dreamed of Asking. First complete edition. San Francisco: Ignatius Press, 1990.
Цитирование MLA (9-е изд.)
Kreeft, Peter. Everything You Wanted to Know About Heaven... but Never Dreamed of Asking. First complete edition. Ignatius Press, 1990.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.