Youtie, H. C. (1931). Gothenburg Papyrus 21 and the Coptic Version of the Letter to Abgar. Harvard theological review, 24(1), 61-65. doi:10.1017/S0017816000025712
Citazione stile Chigago Style (17a edizione)Youtie, Herbert C. "Gothenburg Papyrus 21 and the Coptic Version of the Letter to Abgar." Harvard Theological Review 24, no. 1 (1931): 61-65, https://doi.org/10.1017/S0017816000025712.
Citatione MLA (9a ed.)Youtie, Herbert C. "Gothenburg Papyrus 21 and the Coptic Version of the Letter to Abgar." Harvard Theological Review, vol. 24, no. 1, 1931, pp. 61-65, https://doi.org/10.1017/S0017816000025712.
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