Cita APA (7a ed.)

Hernández Jaco, K. A., Orellana Santamaría, W. E., Pérez Mendoza, E. A., & Vanegas Salguero, M. O. a proficiency test as a requirement to graduatew in the major.

Cita Chicago Style (17a ed.)

Hernández Jaco, Karen Azucena, William Ernesto Orellana Santamaría, Edgar Amilcar Pérez Mendoza, y Miguel Oswaldo Vanegas Salguero. A Proficiency Test as a Requirement to Graduatew in the Major.

Cita MLA (9a ed.)

Hernández Jaco, Karen Azucena, et al. A Proficiency Test as a Requirement to Graduatew in the Major.