Mason, Stephen S., author
Henry Schuman, 1953
Buku Teks
Taylor, F. Sherwood
Norton, 1963
Buku Teks
Gjertsen, Derek, author
Lilian Barber Press, 1984
Buku Referensi
Needham, Joseph, author
Cambridge University Press, 1956
Buku Teks
Gower, Barry
Routledge, 1997
Buku Teks