Citazione APA

Cassels, J. (1960). How to sell successfully by direct mail. Business publications.

Stile di citazione Chicago

Cassels, J.W.W. How to Sell Successfully by Direct Mail. London: Business publications, 1960.

Citazione MLA

Cassels, J.W.W. How to Sell Successfully by Direct Mail. Business publications, 1960.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.