Lafford, B. A. (1991). Dynamic synchrony in the Spanish of Cartagena, Colombia, the influences of linguistic, stylistic and social factors on the retention, aspiration and deletion of syllable and word final "s". University Microfilms International.
Cita Chicago Style (17a ed.)Lafford, Barbara Armstrong. Dynamic Synchrony in the Spanish of Cartagena, Colombia, the Influences of Linguistic, Stylistic and Social Factors on the Retention, Aspiration and Deletion of Syllable and Word Final "S". Ann Arbor: University Microfilms International, 1991.
Cita MLA (9a ed.)Lafford, Barbara Armstrong. Dynamic Synchrony in the Spanish of Cartagena, Colombia, the Influences of Linguistic, Stylistic and Social Factors on the Retention, Aspiration and Deletion of Syllable and Word Final "S". University Microfilms International, 1991.