Davis, Paul, author
Cambridge University Press, 1994
Buku Teks
Standley, Gerald B., author
Houghton Mifflin, 1971
Buku Teks
Gulf Puslishing, 1964
Buku Teks
Subramanian, Muralisrinivasan, author
Momentum Press, 2012
Buku Teks
edited by Mary Feeney
Taylor Graham, 1986
Buku Referensi