एपीए उद्धरण

Chacón Serrano, W. (2017). GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015.

शिकागो स्टाइल उद्धरण

Chacón Serrano, William. GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015. 2017.

एमएलए उद्धरण

Chacón Serrano, William. GEOGRAPHICAL DISTRIBUTION OF PREVALENCE LEVELS DRUG USE IN POPULATION OF HIGH SCHOOL EDUCATION IN COSTA RICA, 2015. 2017.