Wright, Leavitt O. (1931). "The Disappearing Spanish Verb Form in -re". Hispania. 14 (2). American Association of Teachers of Spanish and Portuguese: 107–114. doi:10.2307/332496. ISSN0018-2133. JSTOR332496. OCLC5552696109.
Wright, Leavitt O. (1931). "The Disappearing Spanish Verb Form in -re". Hispania. 14 (2). American Association of Teachers of Spanish and Portuguese: 107–114. doi:10.2307/332496. ISSN0018-2133. JSTOR332496. OCLC5552696109.
"Languages: Latin: curro." Verbix. N.p., 2010. Web. 22 Mar. 2010. <"Latin verb 'curro' conjugated". Archived from the original on 2011-06-05. Retrieved 2010-03-22.>.
"Languages: Latin: curro." Verbix. N.p., 2010. Web. 22 Mar. 2010. <"Latin verb 'curro' conjugated". Archived from the original on 2011-06-05. Retrieved 2010-03-22.>.
Wright, Leavitt O. (1931). "The Disappearing Spanish Verb Form in -re". Hispania. 14 (2). American Association of Teachers of Spanish and Portuguese: 107–114. doi:10.2307/332496. ISSN0018-2133. JSTOR332496. OCLC5552696109.