Chacón Serrano, W. (2017). GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015.
استشهاد بنمط شيكاغوChacón Serrano, William. GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015. 2017.
MLA استشهادChacón Serrano, William. GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015. 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.