Weston, J. Fred [John Fred], 1916-
Holt, Rinehart and Winston, 1972
Buku Teks
Franks, J.R.
John Wiley & Sons, 1979
Buku Teks SO
Weston, J. Fred [John Fred], 1916-
Erlangga , 1997
Buku Teks
Weston, J. Fred [John Fred], 1916-
Richard D. Irwin, 1972
Buku Teks
Warren, Carl S.
Thomson, 2005
Buku Teks