Παραπομπή σε μορφή APA (7η εκδ.)

Underwood, P. G. (1996). Soft systems analysis: And the management of libraries, information services and resource centres. Library Association Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Underwood, Peter G. Soft Systems Analysis: And the Management of Libraries, Information Services and Resource Centres. London: Library Association Publishing, 1996.

Παραπομπή σε μορφή MLA (8th εκδ.)

Underwood, Peter G. Soft Systems Analysis: And the Management of Libraries, Information Services and Resource Centres. Library Association Publishing, 1996.