APA (7e ed.) Bronvermelding

ADAIR JOHN. (1988). EFFECTIVE TIME MANAGEMENT HOW TO SAVE TIME AND SPEND IT WISELY. RUPA & COMPANY.

Chicago (17e ed.) Bronvermelding

ADAIR JOHN. EFFECTIVE TIME MANAGEMENT HOW TO SAVE TIME AND SPEND IT WISELY. NEW DELHI: RUPA & COMPANY, 1988.

MLA (9e ed.) Bronvermelding

ADAIR JOHN. EFFECTIVE TIME MANAGEMENT HOW TO SAVE TIME AND SPEND IT WISELY. RUPA & COMPANY, 1988.