Tyree, S. Young, author
Macmillan, 1961
Buku Teks
Upadhyaya, K.N., author
Vikas Publishing House, 1994
Buku Teks
Moeller, Therald, author
John Wiley & Sons, 1952
Buku Teks
Barnett, E. de Barry, author
Longman, 1957
Buku Teks
Bowser, James R., author
Brooks/Cole, 1993
Buku Teks