APA Style
Maris, A.
(2007).
Challenges: Workbook 4
(
cet. 1)
.
England:
Pearson Education Limitted.
MLA Style
Maris, Amanda.
"Challenges: Workbook 4".
cet. 1
England:
Pearson Education Limitted,
2007.
Buku SMP Athalia.