Gaya APA
Todd, G., Rice, S. (1996).
Travel Perspectives: a guide to becoming a travel agent second edition (2nd ed.).
USA:
Delmar Publisher.
Gaya MLA
Todd, Ginger., Rice, Susan.
"Travel Perspectives: a guide to becoming a travel agent second edition".
2nd ed.
USA:
Delmar Publisher,
1996.
BUKU.