Gaya APA
An introduction to group work practice. (2012).
Boston:
Pearson Education Ltd..
Gaya Chicago
An introduction to group work practice.
7th ed..
Boston:
Pearson Education Ltd.,
2012.
Buku.
Gaya MLA
An introduction to group work practice.
7th ed..
Boston:
Pearson Education Ltd.,
2012.
Buku.
Gaya Turabian
An introduction to group work practice.
Boston:
Pearson Education Ltd.,
2012.
Buku.