1.
London : Routledge, 1990, ©1986.
English | A 5(111) TOD.I |
2.
London [England] : Longman, 1976.
English | A 4(111) ROG.TH 1976 |
3.
London [England] : Longmans, 1965.
English | A 4(111) ROG.TH 1965 |
4.
New York, NY : Smithmark, 1999.
English | A 4(111) MCC.R |
5.
6.
Westerville, OH : Glencoe/McGraw-Hill, 1995.
Tenth edition.
English | A 4(111) HOS.X |
7.
8.
9.
Sutton : Computer Weekly Publications, c1989.
Second edition.
Danish | D 331 ENT.C |
10.