Gaya APA

Wolferstan, B, S. (1928). An eight days' retreat. Abridged & adapted from G.Longhaye S.J. 'Retraite annuelle de huit jours'. . London: Sand.

Gaya MLA

Wolferstan, Bertram,, S.J.. "An eight days' retreat. Abridged & adapted from G.Longhaye S.J. 'Retraite annuelle de huit jours'. ". London: Sand, 1928. Buku.