COVEY, S. THE 7 HABITS OF HIGHLY EFFECTIVE TEENS.
Cita Chicago (17th ed.)COVEY, SEAN. THE 7 HABITS OF HIGHLY EFFECTIVE TEENS.
Cita MLA (9th ed.)COVEY, SEAN. THE 7 HABITS OF HIGHLY EFFECTIVE TEENS.
Atenció: Aquestes cites poden no estar 100% correctes.