Gardiner, P. (2002). Kierkegaard: A Very Short Introduction (1st.). Oxford.
Lua i Stíl Chicago (17ú heag.)Gardiner, Patrick. Kierkegaard: A Very Short Introduction. 1st. Oxford, 2002.
Lua MLA (9ú heag.)Gardiner, Patrick. Kierkegaard: A Very Short Introduction. 1st. Oxford, 2002.
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