Chhalotra, G.P.
Khanna Publishers, [date of publication not identified]
Buku Teks
Johnson, James H., author
International Textbook, 1965
Buku Teks
Kasatkin, A.S. (Aleksandr Sergeevich), 1899-, author
Mir Publishers, 1970
Buku Teks
Dorf, Richard C.
CRC Press , 1993
Buku Referensi
Pansini, Anthony J., author
McGraw-Hill, 1983
Buku Teks