Παραπομπή σε μορφή APA (7η εκδ.)

Looijen, R. C. (1998). Holism and reductionism in biology and ecology: The mutual dependence of higher and lower level research programmes. s.n.].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Looijen, Richard Christiaan. Holism and Reductionism in Biology and Ecology: The Mutual Dependence of Higher and Lower Level Research Programmes. [S.l.: s.n.], 1998.

Παραπομπή σε μορφή MLA (8th εκδ.)

Looijen, Richard Christiaan. Holism and Reductionism in Biology and Ecology: The Mutual Dependence of Higher and Lower Level Research Programmes. s.n.], 1998.