APA (7e ed.) Bronvermelding

LAKEIN ALAN. (1974). HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. SIGNET BOOK.

Chicago (17e ed.) Bronvermelding

LAKEIN ALAN. HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. NEW YORK: SIGNET BOOK, 1974.

MLA (9e ed.) Bronvermelding

LAKEIN ALAN. HOW TO GET CONTROL OF YOUR TIME & YOUR LIFE. SIGNET BOOK, 1974.