APA (7th ed.) Citation

Kegel Christensen, W., & Schmid, F. (1987). The Belemnites of the Vaals formation from the C.P.L. Quarry at Hallembaye, Belgium: Taxonomy, biometry and biostratigraphy. Schweizerbart.

Chicago Style (17th ed.) Citation

Kegel Christensen, Walter, and Friedrich Schmid. The Belemnites of the Vaals Formation from the C.P.L. Quarry at Hallembaye, Belgium: Taxonomy, Biometry and Biostratigraphy. Hannover: Schweizerbart, 1987.

MLA (9th ed.) Citation

Kegel Christensen, Walter, and Friedrich Schmid. The Belemnites of the Vaals Formation from the C.P.L. Quarry at Hallembaye, Belgium: Taxonomy, Biometry and Biostratigraphy. Schweizerbart, 1987.