Παραπομπή σε μορφή APA (7η εκδ.)

Hasson, G. (2017). Positive thinking: Find happiness and achieve your goals through the power of positive thought. Capstone, A Wiley Brand.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hasson, Gill. Positive Thinking: Find Happiness and Achieve Your Goals Through the Power of Positive Thought. Chichester, West Sussex, UK: Capstone, A Wiley Brand, 2017.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hasson, Gill. Positive Thinking: Find Happiness and Achieve Your Goals Through the Power of Positive Thought. Capstone, A Wiley Brand, 2017.