APA ציטוט

Cepeda, A., & Valdez, A. (2010). Ethnographic Strategies in the Tracking and Retention of Street-Recruited Community-Based Samples of Substance Using Hidden Populations in Longitudinal Studies.

Citação norma Chicago

Cepeda, Alice, and Avelardo Valdez. Ethnographic Strategies in the Tracking and Retention of Street-Recruited Community-Based Samples of Substance Using Hidden Populations in Longitudinal Studies. 2010.

ציטוט MLA

Cepeda, Alice, and Avelardo Valdez. Ethnographic Strategies in the Tracking and Retention of Street-Recruited Community-Based Samples of Substance Using Hidden Populations in Longitudinal Studies. 2010.