Gaya APA
Scotus., J, D. (1949).
The De primo principio, revised text and a translation by E.Roche O.F.M. .
Louvain dst:
Nauwelaerts dst.
Gaya MLA
Scotus., Joannes, Duns.
"The De primo principio, revised text and a translation by E.Roche O.F.M. ".
Louvain dst:
Nauwelaerts dst,
1949.
Buku.