Burnell, I. The power of positive doing. International Personal Development, Goodwill Publishing House.
Цитирование в стиле Чикаго (17-е изд.)Burnell, Ivan. The Power of Positive Doing. Center Ossipee, NH : New Delhi: International Personal Development, Goodwill Publishing House.
Цитирование MLA (8-е изд.)Burnell, Ivan. The Power of Positive Doing. International Personal Development, Goodwill Publishing House.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.