Citazione Stile APA (7a Edizione)

Dury, G. H. (1981). An introduction to environmental systems (1. publ.). Heinemann.

Citazione stile Chigago Style (17a edizione)

Dury, Georg H. An Introduction to Environmental Systems. 1. publ. London [u.a.]: Heinemann, 1981.

Citatione MLA (9a ed.)

Dury, Georg H. An Introduction to Environmental Systems. 1. publ. Heinemann, 1981.