MLA

Kars, Henk, J. B. H Jansen, and S. P Vriend. Petrography and Geochemistry of Flint From the Lanaye Chalk (rijckholt-st. Geertruid), and Some Other Neolithic Sources. Amersfoort: ROB, 1990.

APA

Kars, H., Jansen, J. B. H, & Vriend, S. P. (1990). Petrography and geochemistry of flint from the Lanaye chalk (Rijckholt-St. Geertruid), and some other neolithic sources. Amersfoort: ROB.

Chicago

Kars, Henk, J. B. H Jansen, and S. P Vriend. Petrography and Geochemistry of Flint From the Lanaye Chalk (rijckholt-St. Geertruid), and Some Other Neolithic Sources. Amersfoort: ROB, 1990.