Gaya APA
Teaching and learning elementary social studies 4th ed.. (1991).
Massachusetts:
Allyn and Bacon.
Gaya Chicago
Teaching and learning elementary social studies 4th ed..
.
Massachusetts:
Allyn and Bacon,
1991.
Buku.
Gaya MLA
Teaching and learning elementary social studies 4th ed..
.
Massachusetts:
Allyn and Bacon,
1991.
Buku.
Gaya Turabian
Teaching and learning elementary social studies 4th ed..
Massachusetts:
Allyn and Bacon,
1991.
Buku.