Young, J.Z.
Oxford University Press , 1981
Buku Teks
Torrey, Theodore W., author
John Wiley & Sons, 1979
Buku Teks
Colbert, Edwin H., author
John Wiley & Sons, 1980
Buku Teks
Ghufron Hidayatullah, author
2016
UI - Skripsi (Membership)
Blackwelder, Richard E.
The Iowa University Press, 1972
Buku Referensi