Lowrie, Pauline, author
Cambridge University Press, 1994
Buku Teks
Flynn, John E., author
McGraw-Hill, 1966
Buku Teks
Parker, Margaret J.
A Bailliere Tindall , 1978
Buku Teks
Talaro, Kathleen Park, author
McGraw-Hill, 2012
Buku Teks
Singleton, Paul, author
John Wiley & Sons, 1980
Buku Referensi