Gaya APA
Royen, William Van. (1971).
Fundamentals of economic geography (text).
New Delhi:
Prentice-Hall of India Private Limited.
Gaya Chicago
Royen, William Van.
Fundamentals of economic geography.
text
New Delhi:
Prentice-Hall of India Private Limited,
1971.
Tesis.
Gaya MLA
Royen, William Van.
Fundamentals of economic geography.
text
New Delhi:
Prentice-Hall of India Private Limited,
1971.
Tesis.
Gaya Turabian
Royen, William Van.
Fundamentals of economic geography.
text
New Delhi:
Prentice-Hall of India Private Limited,
1971.
Tesis.