Lay, Steven R., 1944-
John Wiley & Sons, 1982
Buku Teks
edited by A. Hajnal, R. Rado, Vera T. Sos
North-Holland, 1975
Buku Teks
edited by Gunter Asser, Jurgen Flachsmeyer, Willi Rinow
Web Deutscher der Wissenschaften, 1972
Buku Teks
Landman, Fred
Blackwell, 2003
Buku Teks
Pfeiffer, Paul E.
McGraw-Hill, 1964
Buku Teks