Citazione APA

UNEP. (1979). Directory of institutions and individuals active in environmentally sound and appropriate technologies. Pergamon press.

Stile di citazione Chicago

UNEP. Directory of Institutions and Individuals Active in Environmentally Sound and Appropriate Technologies. NewYork: Pergamon press, 1979.

Citazione MLA

UNEP. Directory of Institutions and Individuals Active in Environmentally Sound and Appropriate Technologies. Pergamon press, 1979.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.