Gaya APA

Epstein, A, (. (1970). Research and Development Progress Report No. 631 Ion Exchange: Field Evaluation of DESAL Process . : United States Department of the Interior.

Gaya MLA

Epstein, A.C, (a.o). "Research and Development Progress Report No. 631 Ion Exchange: Field Evaluation of DESAL Process". : United States Department of the Interior, 1970. Text.