Dhanpat Rai and Sons, 1980
Buku Teks
Hazra, B., author
Dhanpat Rai and Sons, 1980
Buku Teks
Jordan, Richard C. (Richard Charles), 1909-, author
Prentice-Hall, 1981
Buku Teks
Arora, C. P., author
Tata McGraw-Hill, 1981
Buku Teks
Ballaney, P. L., author
Khanna, 1983
Buku Teks