APA
Schreurs J., . (1972). Black thread disease, control measures and yield stimulation in Hevea brasiliensis in Liberia. Wageningen: Veerman.
Chicago
Schreurs J, . 1972. Black thread disease, control measures and yield stimulation in Hevea brasiliensis in Liberia. Wageningen: Veerman.
Harvard
Schreurs J., . (1972). Black thread disease, control measures and yield stimulation in Hevea brasiliensis in Liberia. Wageningen: Veerman.
MLA
Schreurs J, . Black thread disease, control measures and yield stimulation in Hevea brasiliensis in Liberia. Wageningen: Veerman. 1972.