MCKILLIP, John. Objective Lens: In Memoriam: John Pichtel. Fine Focus, [S. l.], v. 12, n. 1, p. 2–3, 2026. DOI: 10.33043/j4qgqc9uc74. Disponível em: https://openjournals.bsu.edu/finefocus/article/view/6406. Acesso em: 31 oct. 2026.