Gaya APA

Habsburg, O. (1965). Portugal, pioneer of new horizons, documentary proof of Portuguese priority in discovering the secrets of the globe, research and artistic arrangement by Fr.P.Marjay. . Lisbon: Bertrand.

Gaya MLA

Habsburg, O.von.. "Portugal, pioneer of new horizons, documentary proof of Portuguese priority in discovering the secrets of the globe, research and artistic arrangement by Fr.P.Marjay. ". Lisbon: Bertrand, 1965. Buku.