APA-referens (7:e uppl.)

Harrison, S., Alderdice, F., Henderson, J., Redshaw, M., & Quigley, M. (2020). Trends in response rates and respondent characteristics in five National Maternity Surveys in England during 1995–2018. BioMed Central.

Chicago-referens (17:e uppl.)

Harrison, S., F. Alderdice, J. Henderson, M. Redshaw, och MA Quigley. Trends in Response Rates and Respondent Characteristics in Five National Maternity Surveys in England During 1995–2018. BioMed Central, 2020.

MLA-referens (9:e uppl.)

Harrison, S., et al. Trends in Response Rates and Respondent Characteristics in Five National Maternity Surveys in England During 1995–2018. BioMed Central, 2020.