Cita APA (7th ed.)
Timm, P. R. Eliminate customer turnoffs. Jack Wilson and Associates.
Cita Chicago (17th ed.)
Timm, Paul R. Eliminate Customer Turnoffs. Illonois, Chicago: Jack Wilson and Associates.
Cita MLA (9th ed.)
Timm, Paul R. Eliminate Customer Turnoffs. Jack Wilson and Associates.
Atenció: Aquestes cites poden no estar 100% correctes.