(1995). Neogene and quaternary geology of North-West Europe: Contributions on the occasion of Waldo H. Zagwijn's retirement. Rijks Geologische Dienst.
Chicago-Zitierstil (17. Ausg.)Neogene and Quaternary Geology of North-West Europe: Contributions on the Occasion of Waldo H. Zagwijn's Retirement. Haarlem: Rijks Geologische Dienst, 1995.
MLA-Zitierstil (9. Ausg.)Neogene and Quaternary Geology of North-West Europe: Contributions on the Occasion of Waldo H. Zagwijn's Retirement. Rijks Geologische Dienst, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.