Gaya APA
II., J, P. (1980).
The human person and social structures, presented by Roger Heckel S.J. .
Vatican City:
Iustitia et Pax.
Gaya MLA
II., Joannes, Paulus.
"The human person and social structures, presented by Roger Heckel S.J. ".
Vatican City:
Iustitia et Pax,
1980.
Buku.