Crow, D. (2016). Visible signs: An introduction to semiotics in the visual arts (Third edition.). Fairfield Books.
Chicago-viite (17. p.)Crow, David. Visible Signs: An Introduction to Semiotics in the Visual Arts. Third edition. London, UK: Fairfield Books, 2016.
MLA-viite (9. p.)Crow, David. Visible Signs: An Introduction to Semiotics in the Visual Arts. Third edition. Fairfield Books, 2016.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.