APA citiranje

González Beltrán, G., & Monge Sandí, A. (2013). Recommendations for obtaining reliable results of resistance of concrete cylinders.

Citación estilo Chicago

González Beltrán, Guillermo, y Anna Monge Sandí. Recommendations for Obtaining Reliable Results of Resistance of Concrete Cylinders. 2013.

MLA citiranje

González Beltrán, Guillermo, y Anna Monge Sandí. Recommendations for Obtaining Reliable Results of Resistance of Concrete Cylinders. 2013.