Leonov, Leonid, 1899-1994, author
Progress, 1976
Buku Teks
Freeborn, Richard, author
Cambridge University Press, 1985
Buku Teks
Yohanna Dwitriaprila Hunto, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2017
UI - Skripsi (Membership)
Maslov, Yevgeny
Moscow Foreign Languages Publishing House 1960
Buku Teks
by Martin Malia ... [and others]; editor, Richard Pipes
Columbia University , 1961
Buku Teks