Williamson, T., & Association, T. S. P. (1988). Knowability and constructivism. Blackwell Publishing.
Chicago-viite (17. p.)Williamson, T., ja The Scots Philosophical Association. Knowability and Constructivism. Blackwell Publishing, 1988.
MLA-viite (9. p.)Williamson, T., ja The Scots Philosophical Association. Knowability and Constructivism. Blackwell Publishing, 1988.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.