Petersen, William
Macmillan, 1969
Buku Teks SO
Petersen, William
Macmillan, 1969
Buku Teks
edited by Stanley Johnson
John Wiley & Sons, 1973
Buku Teks SO
edited by William Petersen
Macmillan, 1972
Buku Teks SO
Thompson, Warren S.
McGraw-Hill, 1970
Buku Teks SO