Cita APA (7a ed.)

Freijsen, A. H. J. (1967). A field study on the ecology of centaurium vulgare rafn. H. Gianotten.

Cita Chicago Style (17a ed.)

Freijsen, Arnoldus Henricus Joseph. A Field Study on the Ecology of Centaurium Vulgare Rafn. Tilburg: H. Gianotten, 1967.

Cita MLA (8a ed.)

Freijsen, Arnoldus Henricus Joseph. A Field Study on the Ecology of Centaurium Vulgare Rafn. H. Gianotten, 1967.