Παραπομπή APA

Frantzen, J. (1994). Studies on the weed pathosystem cirsium arvense - puccinia punctiformis. DLO-Centre for Agrobiological Research.

Παραπομπή Chicago Style

Frantzen, Jos. Studies on the Weed Pathosystem Cirsium Arvense - Puccinia Punctiformis. Wageningen: DLO-Centre for Agrobiological Research, 1994.

Παραπομπή MLA

Frantzen, Jos. Studies on the Weed Pathosystem Cirsium Arvense - Puccinia Punctiformis. DLO-Centre for Agrobiological Research, 1994.