APA (7th ed.) Citation

HumphreyslhTony. The power of 'negative' thinking.

Chicago Style (17th ed.) Citation

HumphreyslhTony. The Power of 'Negative' Thinking. MacmillanlbNewleaflc1996.

MLA (9th ed.) Citation

HumphreyslhTony. The Power of 'Negative' Thinking.

Warning: These citations may not always be 100% accurate.