APA (7th ed.) Citation

Sijp, J. W. C. M. v. d. (1951). Petrography and geology of Montseny-Guillerias (N.E. Spain). Excelsior.

Chicago Style (17th ed.) Citation

Sijp, Jaap Willem Charles Marie van der. Petrography and Geology of Montseny-Guillerias (N.E. Spain). 's-Gravenhage: Excelsior, 1951.

MLA (8th ed.) Citation

Sijp, Jaap Willem Charles Marie van der. Petrography and Geology of Montseny-Guillerias (N.E. Spain). Excelsior, 1951.