Gaya APA
Environmental Education and Training. (1980).
Bandung:
Binacipta.
Gaya Chicago
Environmental Education and Training.
.
Bandung:
Binacipta,
1980.
Buku.
Gaya MLA
Environmental Education and Training.
.
Bandung:
Binacipta,
1980.
Buku.
Gaya Turabian
Environmental Education and Training.
Bandung:
Binacipta,
1980.
Buku.