Cita APA

Tack, A. (1993). How to increase sales by telephone.

Chicago Edition Citation

Tack, Alfred. How to Increase Sales by Telephone. Mandarin Paperbacks:London, 1993.

Cita MLA

Tack, Alfred. How to Increase Sales by Telephone. 1993.

Atenció: Aquestes cites poden no estar 100% correctes.