LAKEIN ALAN. (1974). HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. SIGNET BOOK.
Cita Chicago (17th ed.)LAKEIN ALAN. HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. NEW YORK: SIGNET BOOK, 1974.
Cita MLA (9th ed.)LAKEIN ALAN. HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. SIGNET BOOK, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.