Gaya APA
Mack, Ken E.. (1991).
Health Care Sales .
America:
Jossey-Bass Inc.
Gaya Chicago
Mack, Ken E..
Health Care Sales.
America:
Jossey-Bass Inc,
1991.
Text.
Gaya MLA
Mack, Ken E..
Health Care Sales.
America:
Jossey-Bass Inc,
1991.
Text.
Gaya Turabian
Mack, Ken E..
Health Care Sales.
America:
Jossey-Bass Inc,
1991.
Print.