APA (7e ed.) Bronvermelding

Fitch, J. M. (1984). Earth and astronomical sciences research centres: A world directory of organizations and programmes. Longman ; Distributed exclusively in USA, its possessions, and Canada by Gale Research Co..

Chicago (17e ed.) Bronvermelding

Fitch, Jennifer M. Earth and Astronomical Sciences Research Centres: A World Directory of Organizations and Programmes. Harlow, Essex, UK : Detroit, MI, USA: Longman ; Distributed exclusively in USA, its possessions, and Canada by Gale Research Co., 1984.

MLA (8e ed.) Bronvermelding

Fitch, Jennifer M. Earth and Astronomical Sciences Research Centres: A World Directory of Organizations and Programmes. Longman ; Distributed exclusively in USA, its possessions, and Canada by Gale Research Co., 1984.