Ummelen, N. (1997). Procedural and declarative information in software manuals: Effects on information use, task performance and knowledge. Rodopi.
Chicago-Zitierstil (17. Ausg.)Ummelen, Nicole. Procedural and Declarative Information in Software Manuals: Effects on Information Use, Task Performance and Knowledge. Amsterdam [u.a.]: Rodopi, 1997.
MLA-Zitierstil (9. Ausg.)Ummelen, Nicole. Procedural and Declarative Information in Software Manuals: Effects on Information Use, Task Performance and Knowledge. Rodopi, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.