APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.