Huckabay, Loucine M. Daderian, author
Mosby Comp., 1980
Buku Teks
Bruner, Jerome S.
Harvard University Press, 1971
Buku Teks
Hui, Y. H. (Yiu H.), author
Jones and Bartlett , 2010
Buku Teks
edited by Poedjosoedarmo Gloria
SEAMEO Regional Language Centre, 2005
Buku Teks
Heinich, Robert
Macmillan, 1989
Buku Teks