APA (7e ed.) Bronvermelding

TRACY BRIAN. (2002). EAT THAT FROG: 21 GREAT WAYS TO STOP PRO. AND ....LESS TIME. MAGNA PUBLISHING CO LTS.

Chicago (17e ed.) Bronvermelding

TRACY BRIAN. EAT THAT FROG: 21 GREAT WAYS TO STOP PRO. AND ....LESS TIME. MUMBAI: MAGNA PUBLISHING CO LTS, 2002.

MLA (9e ed.) Bronvermelding

TRACY BRIAN. EAT THAT FROG: 21 GREAT WAYS TO STOP PRO. AND ....LESS TIME. MAGNA PUBLISHING CO LTS, 2002.