Gaya APA
Erdman, Paul E.. (1975).
The Silver Bears (Cet.1).
USA:
Pocket Books.
Gaya Chicago
Erdman, Paul E..
The Silver Bears.
Cet.1
USA:
Pocket Books,
1975.
Text.
Gaya MLA
Erdman, Paul E..
The Silver Bears.
Cet.1
USA:
Pocket Books,
1975.
Text.
Gaya Turabian
Erdman, Paul E..
The Silver Bears.
Cet.1
USA:
Pocket Books,
1975.
Print.