Gaya APA
Foster, Dennis L.. (1991).
Sales and marketing for the travel professional .
Lake Forest, IL:
Glencoe.
Gaya Chicago
Foster, Dennis L..
Sales and marketing for the travel professional.
Lake Forest, IL:
Glencoe,
1991.
Text.
Gaya MLA
Foster, Dennis L..
Sales and marketing for the travel professional.
Lake Forest, IL:
Glencoe,
1991.
Text.
Gaya Turabian
Foster, Dennis L..
Sales and marketing for the travel professional.
Lake Forest, IL:
Glencoe,
1991.
Print.