Marshall, Alan G.
John Wiley & Sons, 1976
Buku Teks SO
Ackerman, Eugene
Airlangga University Press , 1988
Buku Teks SO
Martin, R. Bruce
McGraw-Hill, 1964
Buku Teks SO
West, Edward Staunton
Macmillan, 1963
Buku Teks SO
Marshall, Alan G.
John Wiley & Sons, 1978
Buku Teks SO