APA (7th ed.) Citation

Tornsdorf, M., & Tornsdorf, H. (1998). Windows 98. Hanser.

Chicago Style (17th ed.) Citation

Tornsdorf, Manfred, and Helmut Tornsdorf. Windows 98. München [u.a.]: Hanser, 1998.

MLA (9th ed.) Citation

Tornsdorf, Manfred, and Helmut Tornsdorf. Windows 98. Hanser, 1998.

Warning: These citations may not always be 100% accurate.