APA

Schulman J., Edmonds L. D., McClearn A. B., Jensvold N. & Shaw G. M. (19930520). Surveillance for and comparison of birth defect prevalences in two geographic areas--United States, 1983-88. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Chicago

Schulman J, Edmonds L D, McClearn A B, Jensvold N and Shaw G M. 19930520. Surveillance for and comparison of birth defect prevalences in two geographic areas--United States, 1983-88. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

Harvard

Schulman J., Edmonds L. D., McClearn A. B., Jensvold N. and Shaw G. M. (19930520). Surveillance for and comparison of birth defect prevalences in two geographic areas--United States, 1983-88. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries.

MLA

Schulman J, Edmonds L D, McClearn A B, Jensvold N and Shaw G M. Surveillance for and comparison of birth defect prevalences in two geographic areas--United States, 1983-88. : MMWR. CDC surveillance summaries : Morbidity and mortality weekly report. CDC surveillance summaries. 19930520.