APA-viite

Espinoza, A. M., Arrieta-Espinoza, G., & Sittenfeld, A. (2004). Relationship of genetically modified crops with the environment and health of the Costa Rican human population.

Chicago-tyylinen lähdeviittaus

Espinoza, Ana M., Griselda Arrieta-Espinoza, ja Ana Sittenfeld. Relationship of Genetically Modified Crops With the Environment and Health of the Costa Rican Human Population. 2004.

MLA-viite

Espinoza, Ana M., Griselda Arrieta-Espinoza, ja Ana Sittenfeld. Relationship of Genetically Modified Crops With the Environment and Health of the Costa Rican Human Population. 2004.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.