APA (7th ed.) Citation

Vermeulen, P. (1947). Studies on dactylorchids. Drukkerij Fa. Schotanus & Jens.

Chicago Style (17th ed.) Citation

Vermeulen, Pieter. Studies on Dactylorchids. Utrecht: Drukkerij Fa. Schotanus & Jens, 1947.

MLA (9th ed.) Citation

Vermeulen, Pieter. Studies on Dactylorchids. Drukkerij Fa. Schotanus & Jens, 1947.

Warning: These citations may not always be 100% accurate.