APA ציטוט

Sipsma, H. L., Canavan, M., Gilliam, M., & Bradley, E. (2017). Impact of social service and public health spending on teenage birth rates across the USA: An ecological study. BMJ Open.

Citação norma Chicago

Sipsma, Heather L., Maureen Canavan, Melissa Gilliam, and Elizabeth Bradley. "Impact of Social Service and Public Health Spending On Teenage Birth Rates Across the USA: An Ecological Study." BMJ Open 2017.

ציטוט MLA

Sipsma, Heather L., Maureen Canavan, Melissa Gilliam, and Elizabeth Bradley. "Impact of Social Service and Public Health Spending On Teenage Birth Rates Across the USA: An Ecological Study." BMJ Open 2017.