APA citiranje

Fernández Aguilar, M., Valverde Serrano, L., Jiménez Ulloa, M. E., Sánchez Alvarado, M. C., & Sequeira Ortiz, N. (1981). Existing at the Center for Documentation Unit of the National University Library Documents.

Citación estilo Chicago

Fernández Aguilar, Mayra, Lady Valverde Serrano, María Ester Jiménez Ulloa, María Cecilia Sánchez Alvarado, y Nidia Sequeira Ortiz. Existing At the Center for Documentation Unit of the National University Library Documents. 1981.

MLA citiranje

Fernández Aguilar, Mayra, et al. Existing At the Center for Documentation Unit of the National University Library Documents. 1981.