Gaya APA
Costa, H, D, L, S, (.
(1977).
An Ignatian witness, unedited texts.
.
Roma:
CLC.
Gaya MLA
Costa, Horacio, De, La.,, S.J., (1916-77).
"An Ignatian witness, unedited texts. ".
Roma:
CLC,
1977.
Majalah.