Παραπομπή σε μορφή APA (7η εκδ.)

Fogelberg, F. (1998). Physical weed control: Intra-row brush weeding and photocontrol in carrots (Daucus carota L.). Swedish University of Agricultural Sciences.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Fogelberg, Fredrik. Physical Weed Control: Intra-row Brush Weeding and Photocontrol in Carrots (Daucus Carota L.). Alnarp: Swedish University of Agricultural Sciences, 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Fogelberg, Fredrik. Physical Weed Control: Intra-row Brush Weeding and Photocontrol in Carrots (Daucus Carota L.). Swedish University of Agricultural Sciences, 1998.