Gaya APA

COVEY, S. (2002). THE INTRODUCTION TO 7 HABITS OF HIGHLY EFFECTIVE TEENS: SUCCES GUIDE . USA: FRANKLIN COVEY.

Gaya MLA

COVEY, SEAN. "THE INTRODUCTION TO 7 HABITS OF HIGHLY EFFECTIVE TEENS: SUCCES GUIDE". USA: FRANKLIN COVEY, 2002. Text.