Pérez Urraza, I. (1972). Breves nociones de IDS. [s.n.].
Chicago Style (17th ed.) CitationPérez Urraza, Iñaki. Breves Nociones De IDS. [S.l.]: [s.n.], 1972.
MLA (9th ed.) CitationPérez Urraza, Iñaki. Breves Nociones De IDS. [s.n.], 1972.
Warning: These citations may not always be 100% accurate.