APA

Webster L. A., Greenspan J. R., Nakashima A. K. & Johnson R. E. (19930909). An evaluation of surveillance for Chlamydia trachomatis infections in the United States, 1987-1991. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Chicago

Webster L A, Greenspan J R, Nakashima A K and Johnson R E. 19930909. An evaluation of surveillance for Chlamydia trachomatis infections in the United States, 1987-1991. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Harvard

Webster L. A., Greenspan J. R., Nakashima A. K. and Johnson R. E. (19930909). An evaluation of surveillance for Chlamydia trachomatis infections in the United States, 1987-1991. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

MLA

Webster L A, Greenspan J R, Nakashima A K and Johnson R E. An evaluation of surveillance for Chlamydia trachomatis infections in the United States, 1987-1991. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries. 19930909.