APA
CANADIAN PROFESSIONAL SALES ASSOCIATION, . (2004). Professional Selling: Skills for sales Success. Toronto: CANADIAN PROFESSIONAL SALES ASSOCIATION.
Chicago
CANADIAN PROFESSIONAL SALES ASSOCIATION, . 2004. Professional Selling: Skills for sales Success. Toronto: CANADIAN PROFESSIONAL SALES ASSOCIATION.
Harvard
CANADIAN PROFESSIONAL SALES ASSOCIATION, . (2004). Professional Selling: Skills for sales Success. Toronto: CANADIAN PROFESSIONAL SALES ASSOCIATION.
MLA
CANADIAN PROFESSIONAL SALES ASSOCIATION, . Professional Selling: Skills for sales Success. Toronto: CANADIAN PROFESSIONAL SALES ASSOCIATION. 2004.