Gaya APA

Dekker,J, ., Fehrmann,H, . (). The Nature of Biotrophy In Phytophthora Infestans . Belanda: Laudbouw Export Bureau.

Gaya MLA

Dekker,J, ., Fehrmann,H, . "The Nature of Biotrophy In Phytophthora Infestans". Belanda: Laudbouw Export Bureau, . Text.