APA-viite

Duncan, M. J., Spence, J. C., & Mummery, W. K. (2005). Perceived environment and physical activity: A meta-analysis of selected environmental characteristics. BioMed Central.

Chicago-tyylinen lähdeviittaus

Duncan, Mitch J., John C. Spence, ja W Kerry Mummery. Perceived Environment and Physical Activity: A Meta-analysis of Selected Environmental Characteristics. BioMed Central, 2005.

MLA-viite

Duncan, Mitch J., John C. Spence, ja W Kerry Mummery. Perceived Environment and Physical Activity: A Meta-analysis of Selected Environmental Characteristics. BioMed Central, 2005.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.