APA
Simpson J. L., Mills J. L., Morey A., Metzger B. E., Knopp R. H., Holmes L. B., Jovanovic-Peterson L., Aarons J. H., Brown Z. & Van Allen M. (19890609). Drug ingestion during pregnancy: infrequent exposure in a contemporary United States sample. National Institute of Child Health and Human Development Diabetes in Early Pregnancy Study Group. : American journal of perinatology.
Chicago
Simpson J L, Mills J L, Morey A, Metzger B E, Knopp R H, Holmes L B, Jovanovic-Peterson L, Aarons J H, Brown Z and Van Allen M. 19890609. Drug ingestion during pregnancy: infrequent exposure in a contemporary United States sample. National Institute of Child Health and Human Development Diabetes in Early Pregnancy Study Group. : American journal of perinatology.
Harvard
Simpson J. L., Mills J. L., Morey A., Metzger B. E., Knopp R. H., Holmes L. B., Jovanovic-Peterson L., Aarons J. H., Brown Z. and Van Allen M. (19890609). Drug ingestion during pregnancy: infrequent exposure in a contemporary United States sample. National Institute of Child Health and Human Development Diabetes in Early Pregnancy Study Group. : American journal of perinatology.
MLA
Simpson J L, Mills J L, Morey A, Metzger B E, Knopp R H, Holmes L B, Jovanovic-Peterson L, Aarons J H, Brown Z and Van Allen M. Drug ingestion during pregnancy: infrequent exposure in a contemporary United States sample. National Institute of Child Health and Human Development Diabetes in Early Pregnancy Study Group. : American journal of perinatology. 19890609.