Gaya APA
Frobisher, B., Gloyn, S. (1969).
Infants Learn Mathematics : A book for teachers .
Sebastopol, CA:
Citra Niaga Rajawali Pers.
Gaya MLA
Frobisher, Beryl., Gloyn, Susan.
"Infants Learn Mathematics : A book for teachers".
Sebastopol, CA:
Citra Niaga Rajawali Pers,
1969.
Textbook.