Maltzoff, Nicholas, author
Ellinois Passport Book, 1994
Buku Teks
Smirnitsky, A.I., author
Higher School Publishing House, 1975
Buku Teks
Rafif Aufa Nanda, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2020
UI - Makalah dan Kertas Kerja
Potapova, Nina F., author
Progress Publishers, [196-]
Buku Teks
Lusin, Natala
Baron's Education, 1992
Buku Referensi