APA-čujuhus (7. p.)
Van der Colff, M. (2010). One is never alone with a rubber duck: Douglas Adams's absurd fictional universe. Cambridge Scholars.
Chicago-čujuhus (17. p.)
Van der Colff, Marilette. One Is Never Alone with a Rubber Duck: Douglas Adams's Absurd Fictional Universe. Newcastle upon Tyne: Cambridge Scholars, 2010.
MLA-čujuhus (9. p.)
Van der Colff, Marilette. One Is Never Alone with a Rubber Duck: Douglas Adams's Absurd Fictional Universe. Cambridge Scholars, 2010.
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