Janssen, C. R. (1960). On the late-glacial and post-glacial Vegetation of South-Limburg <Netherlands>. North-Holland Publishing Company.
Chicago-Zitierstil (17. Ausg.)Janssen, Cornelis R. On the Late-glacial and Post-glacial Vegetation of South-Limburg <Netherlands>. Amsterdam: North-Holland Publishing Company, 1960.
MLA-Zitierstil (9. Ausg.)Janssen, Cornelis R. On the Late-glacial and Post-glacial Vegetation of South-Limburg <Netherlands>. North-Holland Publishing Company, 1960.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.