APA (7e ed.) Bronvermelding

PANCERO JIM. (2006). YOU CAN ALWAYS SELL MORE: HOW TO IMPROVE ANY SALES. JOHN WILEY & SONS.

Chicago (17e ed.) Bronvermelding

PANCERO JIM. YOU CAN ALWAYS SELL MORE: HOW TO IMPROVE ANY SALES. NEW JERSEY: JOHN WILEY & SONS, 2006.

MLA (9e ed.) Bronvermelding

PANCERO JIM. YOU CAN ALWAYS SELL MORE: HOW TO IMPROVE ANY SALES. JOHN WILEY & SONS, 2006.