APA-referens (7:e uppl.)

Cottrell, S. (2011). Critical thinking skills: Developing effective analysis and argument (2nd ed.). Palgrave Macmillan.

Chicago-referens (17:e uppl.)

Cottrell, Stella. Critical Thinking Skills: Developing Effective Analysis and Argument. 2nd ed. Basingstoke, Hampshire, UK New York: Palgrave Macmillan, 2011.

MLA-referens (9:e uppl.)

Cottrell, Stella. Critical Thinking Skills: Developing Effective Analysis and Argument. 2nd ed. Palgrave Macmillan, 2011.