APA Style
Amos, J., Spenceley, A.
(1997).
Being helpful : suka menolong
.
Yogyakarta, Indonesia:
Penerbit Kanisius.
MLA Style
Amos, Janine., Spenceley, Annabel.
"Being helpful : suka menolong".
Yogyakarta, Indonesia:
Penerbit Kanisius,
1997.
Text.