Gaya APA

Andersen, P, B. (1997). A Theory of Computer Semiotics : Semiotic approaches to construction and assessment of computer systems (Inf10) . : Cambridge Univ. Press.

Gaya MLA

Andersen, Peter, Bogh. "A Theory of Computer Semiotics : Semiotic approaches to construction and assessment of computer systems (Inf10)". : Cambridge Univ. Press, 1997. Text.