Hoff, Erika, 1951-
Language development
Wadsworth, 2005
 Buku Teks
Hoff, Erika, 1951-
Language development
Wadsworth and Cengage Learning, 2014
 Buku Teks
Bancroft, W. Jane
Suggestopedia and language acquisition: variations on a theme
Gordon and Breach, 1999
 Buku Teks
Language development: the essential readings
edited by Michael Tomasello and Elizabeth Bates
Blackwell , 2002
 Buku Teks
Language development: the essential readings
Michael Tomasello, Elizabeth Bates, editor
Blackwell , 2001
 Buku Teks