Gaya APA
KNOWLES, Harold L., Gaddum, Leonad W.. (1953).
Our Physical Environment A Problem Approach .
Hoboken, NJ:
Houghton Mifflin Company.
Gaya Chicago
KNOWLES, Harold L., Gaddum, Leonad W..
Our Physical Environment A Problem Approach.
Hoboken, NJ:
Houghton Mifflin Company,
1953.
.
Gaya MLA
KNOWLES, Harold L., Gaddum, Leonad W..
Our Physical Environment A Problem Approach.
Hoboken, NJ:
Houghton Mifflin Company,
1953.
.
Gaya Turabian
KNOWLES, Harold L., Gaddum, Leonad W..
Our Physical Environment A Problem Approach.
Hoboken, NJ:
Houghton Mifflin Company,
1953.
.