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APA Citation
Horstmann, A. C., Winter, S., Rösner, L., & Krämer, N. C. (n.d.). s.O.S. on my phone: An analysis of motives and incentives for participation in smartphone‐based volunteering. Journal of contingencies and crisis management, 26, 193–199. http://access.bl.uk/ark:/81055/vdc_100056930462.0x00001c