Cita APA (7a ed.)

Rivas, D. J. (1980). Prepositions in Spanish and English: A contrastive study and sample thesaurus : based on the Spanish word count taken at the University of Puerto Rico, 1952. University Microfilms International.

Cita Chicago Style (17a ed.)

Rivas, Daniel José. Prepositions in Spanish and English: A Contrastive Study and Sample Thesaurus : Based on the Spanish Word Count Taken at the University of Puerto Rico, 1952. Ann Arbor: University Microfilms International, 1980.

Cita MLA (9a ed.)

Rivas, Daniel José. Prepositions in Spanish and English: A Contrastive Study and Sample Thesaurus : Based on the Spanish Word Count Taken at the University of Puerto Rico, 1952. University Microfilms International, 1980.