Παραπομπή σε μορφή APA (7η εκδ.)

John-Roger & McWilliams, P. (1991). You can't afford the luxury of a negative thought: Book for people with any life-threatening illness including life. Ms. Rowan.

Παραπομπή σε μορφή Chicago (17η εκδ.)

John-Roger και Peter McWilliams. You Can't Afford the Luxury of a Negative Thought: Book for People with Any Life-threatening Illness Including Life. Los Angeles: Ms. Rowan, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

John-Roger και Peter McWilliams. You Can't Afford the Luxury of a Negative Thought: Book for People with Any Life-threatening Illness Including Life. Ms. Rowan, 1991.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.