Skoryrev, P.
Moscow Foreign Languages Publishing House 1956
Buku Teks
Moskwa : Soviet Writer Publidhing House
Majalah, Jurnal, Buletin
Lamont, Corliss, author
Philosophical Library, 1952
Buku Teks
Skosyrev, P., author
Foreign Languages Publishing House , 1956
Buku Teks
McClosky, Herbert, author
McGraw-Hill, 1960
Buku Teks