Johnson, W. A. (1993). Is Oratory Written on Narrower Columns? A Papyrological Rule of Thumb Reviewed. In Proceedings of the 20th International Congress of Papyrology (Copenhagen) (pp. 423–427).

Johnson, W. A. “Is Oratory Written on Narrower Columns? A Papyrological Rule of Thumb Reviewed.” In Proceedings of the 20th International Congress of Papyrology (Copenhagen), 423–27, 1993.

Johnson WA. Is Oratory Written on Narrower Columns? A Papyrological Rule of Thumb Reviewed. In: Proceedings of the 20th International Congress of Papyrology (Copenhagen). 1993. p. 423–7.

Johnson, W. A. “Is Oratory Written on Narrower Columns? A Papyrological Rule of Thumb Reviewed.” Proceedings of the 20th International Congress of Papyrology (Copenhagen), 1993, pp. 423–27.

Johnson WA. Is Oratory Written on Narrower Columns? A Papyrological Rule of Thumb Reviewed. Proceedings of the 20th International Congress of Papyrology (Copenhagen). 1993. p. 423–427.