APA

De Ropp R. S., . (1962). Science and salvation: a scientific appraisal of religion's central thems. New York: St. Martin's Press.

Chicago

De Ropp Robert S, . 1962. Science and salvation: a scientific appraisal of religion's central thems. New York: St. Martin's Press.

Harvard

De Ropp R. S., . (1962). Science and salvation: a scientific appraisal of religion's central thems. New York: St. Martin's Press.

MLA

De Ropp Robert S, . Science and salvation: a scientific appraisal of religion's central thems. New York: St. Martin's Press. 1962.