Joshi, Shubhangini A.
Tata McGraw-Hill, 1992
Buku Teks
Palaniswamy, Usha R.
The Haworth Press, 2008
Buku Teks SO
Garrow, J.S.
Churchil Livingtone, 1996
Buku Teks
Gallant, Ann
Stanley Thornes (Publishers) Ltd., 1992
Buku Teks SO
Orta, John
Garland Publishing, 1988
Buku Referensi