Gaya APA
E.Mack, K. (1991).
Health Care Sales: New Strategies For Improving Quality,Client Relations,And Revenue .
San Francisco:
jossey-bass.
Gaya MLA
E.Mack, Ken.
"Health Care Sales: New Strategies For Improving Quality,Client Relations,And Revenue".
San Francisco:
jossey-bass,
1991.
Text.