APA

Pena M., Bacalloa J. & PAN AMERICAN HEALTH ORGANIZATION. (2000). Obesity and poverty: a new public health challenge. Washington, DC: Pan American Health Organization.

Chicago

Pena Manuel, Bacalloa Jorge and PAN AMERICAN HEALTH ORGANIZATION. 2000. Obesity and poverty: a new public health challenge. Washington, DC: Pan American Health Organization.

Harvard

Pena M., Bacalloa J. and PAN AMERICAN HEALTH ORGANIZATION. (2000). Obesity and poverty: a new public health challenge. Washington, DC: Pan American Health Organization.

MLA

Pena Manuel, Bacalloa Jorge and PAN AMERICAN HEALTH ORGANIZATION. Obesity and poverty: a new public health challenge. Washington, DC: Pan American Health Organization. 2000.