Dangaroo Press, 1989
Buku Teks
Pavlovsky, Michel N.
Philosophical Library , 1949
Buku Teks
Porter, Katherine Anne
Secker & Warburg, 1962
Koleksi Publik
American Council of Learned Societies, 1951
Buku Teks
American Council of Learned Societies, 1951
Buku Teks