Παραπομπή σε μορφή APA (7η εκδ.)

Eckersten, H. (1985). Willow growth as a function of climate, water and nitrogen. Swedish University of Agricultural Sciences, Dept. of Ecology and Environmental Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Eckersten, Henrik. Willow Growth as a Function of Climate, Water and Nitrogen. Uppsala: Swedish University of Agricultural Sciences, Dept. of Ecology and Environmental Research, 1985.

Παραπομπή σε μορφή MLA (8th εκδ.)

Eckersten, Henrik. Willow Growth as a Function of Climate, Water and Nitrogen. Swedish University of Agricultural Sciences, Dept. of Ecology and Environmental Research, 1985.