Warrington, John
London Dent 1961
Buku Teks
Mellersh, H.E.L., author
Simon & Schuster, 1994
Buku Referensi
Steinberg, S.H., author
Macmillan, 1986
Buku Referensi
Lohuizen-De Leeuw, Johanna Engeberta Van
E. J. Brill, 1949
Buku Teks
Christopher Ehret and Merrick Posnansky edited by
University of California Press, 1982
Buku Teks