APA (7e ed.) Bronvermelding
Boice, R. (1996). Procrastination and blocking: A novel, practical approach. Praeger.
Chicago (17e ed.) Bronvermelding
Boice, Robert. Procrastination and Blocking: A Novel, Practical Approach. Westport, Conn.: Praeger, 1996.
MLA (9e ed.) Bronvermelding
Boice, Robert. Procrastination and Blocking: A Novel, Practical Approach. Praeger, 1996.
Let op: Deze citaties zijn niet altijd 100% accuraat.