VRIES, O. N.R. Århammar, Miscellanea Frisica. In nije bondel Fryske stúdzjes. Een nieuwe bundel Friese studies. A new collection of Frisian studies. BMGN - Low Countries Historical Review, [S. l.], v. 102, n. 2, p. 271–272, 1987. DOI: 10.18352/bmgn-lchr.2819. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103166.. Acesso em: 17 aug. 2024.