APA (7th ed.) Citation

S, E., C, G., & L, W. (1999). A screening questionnaire for Asperger syndrome and other high-functioning autism spectrum disorders in school age children. Journal of Autism & Developmental Disorders, 29(2), 129. https://doi.org/10.1023/a:1023040610384

Chicago Style (17th ed.) Citation

S, Ehlers, Gillberg C, and Wing L. "A Screening Questionnaire for Asperger Syndrome and Other High-functioning Autism Spectrum Disorders in School Age Children." Journal of Autism & Developmental Disorders 29, no. 2 (1999): 129. https://doi.org/10.1023/a:1023040610384.

MLA (9th ed.) Citation

S, Ehlers, et al. "A Screening Questionnaire for Asperger Syndrome and Other High-functioning Autism Spectrum Disorders in School Age Children." Journal of Autism & Developmental Disorders, vol. 29, no. 2, 1999, p. 129, https://doi.org/10.1023/a:1023040610384.