APA (7th ed.) Citation

Clarke, A. C. (1998). El centinela. Unidad.

Chicago Style (17th ed.) Citation

Clarke, Arthur C. El Centinela. Madrid: Unidad, 1998.

MLA (9th ed.) Citation

Clarke, Arthur C. El Centinela. Unidad, 1998.

Warning: These citations may not always be 100% accurate.