APA Style

McGraw-Hill, . (1987). McGRAW-HILL Encyclopedia Of Science & Technology: 8 GEO-HYS (6). New York: McGRAW-HILL BOOK COMPANY, Inc.

MLA Style

McGraw-Hill, . "McGRAW-HILL Encyclopedia Of Science & Technology: 8 GEO-HYS". 6 New York: McGRAW-HILL BOOK COMPANY, Inc, 1987. Text.