Citazione Stile APA (7a Edizione)

Strzałkowski, W. (1982). The active character of thinking. [s. n.].

Citazione stile Chigago Style (17a edizione)

Strzałkowski, Wiesław. The Active Character of Thinking. London: [s. n.], 1982.

Citatione MLA (9a ed.)

Strzałkowski, Wiesław. The Active Character of Thinking. [s. n.], 1982.