(1971). Statistical yearbook of the Netherlands.
Chicago-Zitierstil (17. Ausg.)Statistical Yearbook of the Netherlands. Voorburg [u.a.], 1971.
MLA-Zitierstil (8. Ausg.)Statistical Yearbook of the Netherlands. 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.