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MLA

Jack, Andrew. "There are at least eight promising business models for email newsletters." Nieman Journalism Lab. Nieman Foundation for Journalism at Harvard, 10 Nov. 2016. Web. 30 Oct. 2020.

APA

Jack, A. (2016, Nov. 10). There are at least eight promising business models for email newsletters. Nieman Journalism Lab. Retrieved October 30, 2020, from https://www.niemanlab.org/2016/11/there-are-at-least-eight-promising-business-models-for-email-newsletters/

Chicago

Jack, Andrew. "There are at least eight promising business models for email newsletters." Nieman Journalism Lab. Last modified November 10, 2016. Accessed October 30, 2020. https://www.niemanlab.org/2016/11/there-are-at-least-eight-promising-business-models-for-email-newsletters/.

Wikipedia

{{cite web
    | url = https://www.niemanlab.org/2016/11/there-are-at-least-eight-promising-business-models-for-email-newsletters/
    | title = There are at least eight promising business models for email newsletters
    | last = Jack
    | first = Andrew
    | work = [[Nieman Journalism Lab]]
    | date = 10 November 2016
    | accessdate = 30 October 2020
    | ref = {{harvid|Jack|2016}}
}}