APA-referens

Engel, U., Jann, B., Lynn, P., Sherpenzeel, A., & Sturgis, P. (2015). Improving survey methods: Lessons from recent research. Routledge.

Chicago-stil citat

Engel, Uwe, Ben Jann, Peter Lynn, Annette Sherpenzeel, och Patrick Sturgis. Improving Survey Methods: Lessons from Recent Research. New York: Routledge, 2015.

MLA-referens

Engel, Uwe, et al. Improving Survey Methods: Lessons from Recent Research. Routledge, 2015.