APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.