Gaya APA

Velecky, C, O. (1965). Human achievement in the world. Excerpta ex dissertationis Roma 1965. . Rome: Catholic Book Agency dsl.

Gaya MLA

Velecky, Ceslaus,, O.P.. "Human achievement in the world. Excerpta ex dissertationis Roma 1965. ". Rome: Catholic Book Agency dsl, 1965. Buku.