Gaya APA
Egan, Gerard. (1975).
The Skilled Helper / Gerard Egan .
:
California : Brooks.
Gaya Chicago
Egan, Gerard.
The Skilled Helper / Gerard Egan.
:
California : Brooks,
1975.
Buku.
Gaya MLA
Egan, Gerard.
The Skilled Helper / Gerard Egan.
:
California : Brooks,
1975.
Buku.
Gaya Turabian
Egan, Gerard.
The Skilled Helper / Gerard Egan.
:
California : Brooks,
1975.
Buku.