APA (7th ed.) Citation

Frantzen, J. (1994). Studies on the weed pathosystem Cirsium arvense - Puccinia punctiformis. s.n..

Chicago Style (17th ed.) Citation

Frantzen, Jos. Studies on the Weed Pathosystem Cirsium Arvense - Puccinia Punctiformis. [Wageningen?: s.n., 1994.

MLA (8th ed.) Citation

Frantzen, Jos. Studies on the Weed Pathosystem Cirsium Arvense - Puccinia Punctiformis. s.n., 1994.