APA

Herrera G. A., Smith P., Daniels D., Klevens R. M., Coronado V., McCauley M., Stokley S., Maes E. F., Ezzati-Rice T. M., Wright R. A. & Cordero J. F. (20001005). National, state, and urban area vaccination coverage levels among children aged 19-35 months--United States, 1998. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Chicago

Herrera G A, Smith P, Daniels D, Klevens R M, Coronado V, McCauley M, Stokley S, Maes E F, Ezzati-Rice T M, Wright R A and Cordero J F. 20001005. National, state, and urban area vaccination coverage levels among children aged 19-35 months--United States, 1998. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Harvard

Herrera G. A., Smith P., Daniels D., Klevens R. M., Coronado V., McCauley M., Stokley S., Maes E. F., Ezzati-Rice T. M., Wright R. A. and Cordero J. F. (20001005). National, state, and urban area vaccination coverage levels among children aged 19-35 months--United States, 1998. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

MLA

Herrera G A, Smith P, Daniels D, Klevens R M, Coronado V, McCauley M, Stokley S, Maes E F, Ezzati-Rice T M, Wright R A and Cordero J F. National, state, and urban area vaccination coverage levels among children aged 19-35 months--United States, 1998. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries. 20001005.