Gaya APA
Foster, D, L. (2000).
Sales and marketing for the travel provesional (edisi bahasa indonesia).
Jakarta:
RajaGrafindo Persada.
Gaya MLA
Foster, Dennis, L..
"Sales and marketing for the travel provesional".
edisi bahasa indonesia
Jakarta:
RajaGrafindo Persada,
2000.
Text.