Johns, T. (1999). Perfect time management: All you need to get it right first time. London: Random House Business.
Chicago Style citaatJohns, Ted. Perfect Time Management: All You Need to Get It Right First Time. London: Random House Business, 1999.
MLA citatieJohns, Ted. Perfect Time Management: All You Need to Get It Right First Time. London: Random House Business, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.