Gaya APA
Mercado, L, N, S. (1975).
Elements of Filipino theology, preface by C.G.Arévalo S.J. .
Tacloban:
Divine Word UP.
Gaya MLA
Mercado, Leonardo, N.,, S.V.D..
"Elements of Filipino theology, preface by C.G.Arévalo S.J. ".
Tacloban:
Divine Word UP,
1975.
Buku.