Gaya APA
Ritchie, B, W. et al (2016).
Tourism Research Methods: Integrating Theory with Practice (cet 3, to print on demand).
Boston:
CABI.
Gaya MLA
Ritchie, Brent, W,. et al.
"Tourism Research Methods: Integrating Theory with Practice".
cet 3, to print on demand
Boston:
CABI,
2016.
Text.