APA (7e ed.) Bronvermelding

Houtgast, J. (1942). The variations in the profiles of strong Fraunhofer lines along a radius of the solar disc .. Drukkerij F. Schotanus & Jens.

Chicago (17e ed.) Bronvermelding

Houtgast, Jakob. The Variations in the Profiles of Strong Fraunhofer Lines Along a Radius of the Solar Disc .. Utrecht: Drukkerij F. Schotanus & Jens, 1942.

MLA (8e ed.) Bronvermelding

Houtgast, Jakob. The Variations in the Profiles of Strong Fraunhofer Lines Along a Radius of the Solar Disc .. Drukkerij F. Schotanus & Jens, 1942.