Gaya APA

Preston, D, L. (2007). 365 steps to self-confidence : a complete programme for personal transformation in just a few minutes a day (3 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 a day". 3 edition United Kingdom: How To Books Ltd, 2007. Text.