APA

Gregson J., Foerster S. B., Orr R., Jones L., Benedict J., Clarke B., Hersey J., Lewis J. & Zotz A. K. (20050715). System, environmental, and policy changes: using the social-ecological model as a framework for evaluating nutrition education and social marketing programs with low-income audiences. : Journal of nutrition education.

Chicago

Gregson J, Foerster S B, Orr R, Jones L, Benedict J, Clarke B, Hersey J, Lewis J and Zotz A K. 20050715. System, environmental, and policy changes: using the social-ecological model as a framework for evaluating nutrition education and social marketing programs with low-income audiences. : Journal of nutrition education.

Harvard

Gregson J., Foerster S. B., Orr R., Jones L., Benedict J., Clarke B., Hersey J., Lewis J. and Zotz A. K. (20050715). System, environmental, and policy changes: using the social-ecological model as a framework for evaluating nutrition education and social marketing programs with low-income audiences. : Journal of nutrition education.

MLA

Gregson J, Foerster S B, Orr R, Jones L, Benedict J, Clarke B, Hersey J, Lewis J and Zotz A K. System, environmental, and policy changes: using the social-ecological model as a framework for evaluating nutrition education and social marketing programs with low-income audiences. : Journal of nutrition education. 20050715.