Gaya APA

Preston, D, L. (2007). 365 steps to self-confidence : a complete programme for personal transformation-in just a few minutes day (Third edition). United Kingdom: How To Books Ltd.

Gaya MLA

Preston, David, Lawrence. "365 steps to self-confidence : a complete programme for personal transformation-in just a few minutes day". Third edition United Kingdom: How To Books Ltd, 2007. Electronic Resource.