Gaya APA
ALLEN,Shirley Walter, LEONARD,Justin Wilkinson.. (1955).
Conserving Natural Resources (3rd.ed.).
New York:
McGRAW-HILL BOOK COMPANY.
Gaya Chicago
ALLEN,Shirley Walter, LEONARD,Justin Wilkinson..
Conserving Natural Resources.
3rd.ed.
New York:
McGRAW-HILL BOOK COMPANY,
1955.
Teks.
Gaya MLA
ALLEN,Shirley Walter, LEONARD,Justin Wilkinson..
Conserving Natural Resources.
3rd.ed.
New York:
McGRAW-HILL BOOK COMPANY,
1955.
Teks.
Gaya Turabian
ALLEN,Shirley Walter, LEONARD,Justin Wilkinson..
Conserving Natural Resources.
3rd.ed.
New York:
McGRAW-HILL BOOK COMPANY,
1955.
Teks.