Gaya APA
IFFERT, Robert E.. (1957).
Retention and Withdrawal of college students .
Washington:
United States Goverment.
Gaya Chicago
IFFERT, Robert E..
Retention and Withdrawal of college students.
Washington:
United States Goverment,
1957.
Teks.
Gaya MLA
IFFERT, Robert E..
Retention and Withdrawal of college students.
Washington:
United States Goverment,
1957.
Teks.
Gaya Turabian
IFFERT, Robert E..
Retention and Withdrawal of college students.
Washington:
United States Goverment,
1957.
Teks.