Gaya APA
Walker, John R.. (2017).
Introduction to hospitality (7).
Essex, England:
Pearson.
Gaya Chicago
Walker, John R..
Introduction to hospitality.
7
Essex, England:
Pearson,
2017.
Text.
Gaya MLA
Walker, John R..
Introduction to hospitality.
7
Essex, England:
Pearson,
2017.
Text.
Gaya Turabian
Walker, John R..
Introduction to hospitality.
7
Essex, England:
Pearson,
2017.
Print.