APA Style
Gregor, Howar F.. (1963).
Environment and economic life: an economic and social geograpgy .
New Jersey:
D. Van Nostrand Company.
Chicago Style
Gregor, Howar F..
Environment and economic life: an economic and social geograpgy.
New Jersey:
D. Van Nostrand Company,
1963.
Buku Teks.
MLA Style
Gregor, Howar F..
Environment and economic life: an economic and social geograpgy.
New Jersey:
D. Van Nostrand Company,
1963.
Buku Teks.
Turabian Style
Gregor, Howar F..
Environment and economic life: an economic and social geograpgy.
New Jersey:
D. Van Nostrand Company,
1963.
Buku Teks.