Citace podle APA

Brian Tracy & Christina Tracy Stein. (2012). Kiss That Frog: 12 Great Ways to Turn Negatives into Positives in Your Life and Work. Collins Business.

Styl Chicago

Brian Tracy a Christina Tracy Stein. Kiss That Frog: 12 Great Ways to Turn Negatives into Positives in Your Life and Work. Noida, Uttar Pradesh: Collins Business, 2012.

Citace podle MLA

Brian Tracy a Christina Tracy Stein. Kiss That Frog: 12 Great Ways to Turn Negatives into Positives in Your Life and Work. Collins Business, 2012.

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