Gaya APA
Adult education and development/editor Heribert Hinzen. (1988).
Jerman:
German Adult Education Association.
Gaya Chicago
Adult education and development/editor Heribert Hinzen.
.
Jerman:
German Adult Education Association,
1988.
.
Gaya MLA
Adult education and development/editor Heribert Hinzen.
.
Jerman:
German Adult Education Association,
1988.
.
Gaya Turabian
Adult education and development/editor Heribert Hinzen.
Jerman:
German Adult Education Association,
1988.
.