APA (7th ed.) Citation

Funk, W. (1955). Six weeks to words of power. Pocket Books.

Chicago Style (17th ed.) Citation

Funk, Wilfred. Six Weeks to Words of Power. Nueva York: Pocket Books, 1955.

MLA (9th ed.) Citation

Funk, Wilfred. Six Weeks to Words of Power. Pocket Books, 1955.

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