Rocío Madrigal, A., Syedd León, R., Montero, E., & Vega-Baudrit, J. (2012). Analysis of national chemistry olympiad in Costa Rica: Achievements and challenges for young people.
استشهاد بنمط شيكاغوRocío Madrigal, Ana, Randall Syedd León, Eric Montero, و José Vega-Baudrit. Analysis of National Chemistry Olympiad in Costa Rica: Achievements and Challenges for Young People. 2012.
MLA استشهادRocío Madrigal, Ana, Randall Syedd León, Eric Montero, و José Vega-Baudrit. Analysis of National Chemistry Olympiad in Costa Rica: Achievements and Challenges for Young People. 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.