Citazione APA

Beck,, L. L. (2003). System software: An introduction to system programming (3.). Pearson Education Inc..

Stile di citazione Chicago

Beck,, Leland L. System Software: An Introduction to System Programming. 3. Delhi: Pearson Education Inc., 2003.

Citazione MLA

Beck,, Leland L. System Software: An Introduction to System Programming. 3. Pearson Education Inc., 2003.