Lua APA (7ú heag.)
Hustwit, R. E. (2014). O.K. Bouwsma: A philosopher's journey. Peter Lang.
Lua i Stíl Chicago (17ú heag.)
Hustwit, Ronald E. O.K. Bouwsma: A Philosopher's Journey. New York: Peter Lang, 2014.
Lua MLA (9ú heag.)
Hustwit, Ronald E. O.K. Bouwsma: A Philosopher's Journey. Peter Lang, 2014.
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