Gaya APA
FRIEDL, Alfred E. (1991).
Teaching science an integrated approch .
America:
McGaw-Hill.
Gaya Chicago
FRIEDL, Alfred E.
Teaching science an integrated approch.
America:
McGaw-Hill,
1991.
BUKU.
Gaya MLA
FRIEDL, Alfred E.
Teaching science an integrated approch.
America:
McGaw-Hill,
1991.
BUKU.
Gaya Turabian
FRIEDL, Alfred E.
Teaching science an integrated approch.
America:
McGaw-Hill,
1991.
BUKU.