Berkeley University of California Press 1968
Buku Teks
Barbeau, Joseph E.
Custom book program of northeastern University , 1985
Buku Teks
Griswold, Alfred Whitney, 1906-1963
Brace, 1939
Buku Teks
Garland , 1993
Buku Teks
Griffith, Ernest S.
London Methuen & Co. 1967,
Buku Teks