APA ציטוט

Peiffer, V. (1990). Strategies of optimism: A practical guide to personal development. Element Books.

Chicago Style (17th ed.) Citation

Peiffer, Vera. Strategies of Optimism: A Practical Guide to Personal Development. Dorset, UK: Element Books, 1990.

ציטוט MLA

Peiffer, Vera. Strategies of Optimism: A Practical Guide to Personal Development. Element Books, 1990.