Mikkelsen, Britha
Yayasan Obor Indonesia, 1999
Buku Teks
Mikkelsen, Britha
Yayasan Pustaka Obor Indonesia, 2011
Buku Teks
Procton, John H.
Bina Aksara, 1983
Buku Teks
Aaron, David
UNICEF, Yayasan Harapan Permata Hati Kita, Rotary Club, Ford Foundation, 2004
Buku Referensi
Rainer Adam [and others]
Frederich-Naumann-Stiftung, 2000
Buku Teks