Strausbaugh, J. A. (1933). The use of "auer a" and "auer de" as auxiliary verbs in Old Spanish: From the earliest texts to the end of the thirteenth century ...
Chicago Style (17th ed.) CitationStrausbaugh, John Anthony. The Use of "Auer a" and "Auer De" as Auxiliary Verbs in Old Spanish: From the Earliest Texts to the End of the Thirteenth Century ... 1933.
MLA (8th ed.) CitationStrausbaugh, John Anthony. The Use of "Auer a" and "Auer De" as Auxiliary Verbs in Old Spanish: From the Earliest Texts to the End of the Thirteenth Century ... 1933.
Warning: These citations may not always be 100% accurate.