Kalma, J. J. (1949). Fryske plaknamen. Dykstra.
Chicago Style (17th ed.) CitationKalma, J. J. Fryske Plaknamen. Ljouwert: Dykstra, 1949.
MLA (9th ed.) CitationKalma, J. J. Fryske Plaknamen. Dykstra, 1949.
Warning: These citations may not always be 100% accurate.