APA (7e ed.) Bronvermelding

CRANDALL RICK. (1998). 1001 WAYS TO MARKET YOUR SERVICES. CONTEMPORARY BOOK.

Chicago (17e ed.) Bronvermelding

CRANDALL RICK. 1001 WAYS TO MARKET YOUR SERVICES. U S A: CONTEMPORARY BOOK, 1998.

MLA (9e ed.) Bronvermelding

CRANDALL RICK. 1001 WAYS TO MARKET YOUR SERVICES. CONTEMPORARY BOOK, 1998.