APA (7th ed.) Citation

Felder, H. L. (1979). The marriage of Urraca of Castile and Alfonso I of Aragon: An attempt at federal union of christian Spain. University Microfilms International.

Chicago Style (17th ed.) Citation

Felder, Howard Lewis. The Marriage of Urraca of Castile and Alfonso I of Aragon: An Attempt at Federal Union of Christian Spain. Ann Arbor: University Microfilms International, 1979.

MLA (9th ed.) Citation

Felder, Howard Lewis. The Marriage of Urraca of Castile and Alfonso I of Aragon: An Attempt at Federal Union of Christian Spain. University Microfilms International, 1979.