Gaya APA
Agista, P, C., Prasetya, D. (2007).
Let\'s Play with Numbers for Kids (Cet 5).
Yogyakarta:
Penerbit Kanisius.
Gaya MLA
Agista, Paulina, Candra., Prasetya, Dhian.
"Let\'s Play with Numbers for Kids".
Cet 5
Yogyakarta:
Penerbit Kanisius,
2007.
Text.