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MLA

Schmidt, Christine. "How Piano built a propensity paywall for publishers — and what it’s learned so far." Nieman Journalism Lab. Nieman Foundation for Journalism at Harvard, 6 Aug. 2019. Web. 20 Mar. 2023.

APA

Schmidt, C. (2019, Aug. 6). How Piano built a propensity paywall for publishers — and what it’s learned so far. Nieman Journalism Lab. Retrieved March 20, 2023, from https://www.niemanlab.org/2019/08/how-piano-built-a-propensity-paywall-for-publishers-and-what-its-learned-so-far/

Chicago

Schmidt, Christine. "How Piano built a propensity paywall for publishers — and what it’s learned so far." Nieman Journalism Lab. Last modified August 6, 2019. Accessed March 20, 2023. https://www.niemanlab.org/2019/08/how-piano-built-a-propensity-paywall-for-publishers-and-what-its-learned-so-far/.

Wikipedia

{{cite web
    | url = https://www.niemanlab.org/2019/08/how-piano-built-a-propensity-paywall-for-publishers-and-what-its-learned-so-far/
    | title = How Piano built a propensity paywall for publishers — and what it’s learned so far
    | last = Schmidt
    | first = Christine
    | work = [[Nieman Journalism Lab]]
    | date = 6 August 2019
    | accessdate = 20 March 2023
    | ref = {{harvid|Schmidt|2019}}
}}