Gaya APA

ELLISON, R, S, A. (1998). A guide to sources of esrth science information for planning and development; Technical Report WA/97/85 . : British Geol. Survey.

Gaya MLA

ELLISON, R.A;, SMITH,, A. "A guide to sources of esrth science information for planning and development; Technical Report WA/97/85". : British Geol. Survey, 1998. Laporan.