Harr, Milton Edward, 1925-
McGraw-Hill, 1966
Buku Teks SO
Harr, Milton Edward, 1925-
McGraw-Hill, 1966
Buku Teks SO
Buhdhu, Muni
John Wiley & Sons, 2011
Buku Teks
Punmia, B.C.
Standard Book House, 1981
Buku Teks
Budhu, Muni
John Wiley & Sons, 2000
Buku Teks SO