Gaya APA
Kierkegaard, S. ().
The difficulty of being Christian, texts ed. and introd.by J.Colette O.P., English version by J.M.McInerny and M.Turcotte, (repr.) : Kierkegaard et la diffulté d'être chrétien, 1964. Cet.pertama terj.1968.. .
University of Notre Dame Press:
-1969.
Gaya MLA
Kierkegaard, S..
"The difficulty of being Christian, texts ed. and introd.by J.Colette O.P., English version by J.M.McInerny and M.Turcotte, (repr.) : Kierkegaard et la diffulté d'être chrétien, 1964. Cet.pertama terj.1968..".
University of Notre Dame Press:
-1969,
.
Buku.