Bakker, R. (1966). The emergence of agriculture on the Drenthe Plateau: A palaeobotanical study supported by high-resolution ¹⁴C dating. Rijksuniversiteit te Groningen.
Dyfyniad Arddull ChicagoBakker, Ronald. The Emergence of Agriculture on the Drenthe Plateau: A Palaeobotanical Study Supported by High-resolution ¹⁴C Dating. Netherlands: Rijksuniversiteit te Groningen, 1966.
Dyfyniad MLABakker, Ronald. The Emergence of Agriculture on the Drenthe Plateau: A Palaeobotanical Study Supported by High-resolution ¹⁴C Dating. Rijksuniversiteit te Groningen, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.