APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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

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