Ortiz de Urbina, J. (1991). Euskal sintaxiaz. Labayru Ikastegia.
Chicago Style (17th ed.) CitationOrtiz de Urbina, Jon. Euskal Sintaxiaz. Bilbao: Labayru Ikastegia, 1991.
MLA (9th ed.) CitationOrtiz de Urbina, Jon. Euskal Sintaxiaz. Labayru Ikastegia, 1991.
Warning: These citations may not always be 100% accurate.