Hügel, F., & Greene, G. M. (1928). Letters from Baron Friedrich von Hügel to a niece. J.M. Dent & Sons.
Čikaški stil citiranja (17. izdanje)Hügel, Friedrich, i Gwendolen Maud Greene. Letters from Baron Friedrich Von Hügel to a Niece. London ; Toronto: J.M. Dent & Sons, 1928.
MLA način citiranja (8. izdanje)Hügel, Friedrich, i Gwendolen Maud Greene. Letters from Baron Friedrich Von Hügel to a Niece. J.M. Dent & Sons, 1928.
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