Gaya APA

WALPOLE, B. (1998). MACMILLAN REVISED ENCYCLOPEDIA OF SCIENCE BODY AND HEALTH 6 . NEW YORK: MACMILLAN REFERENCE.

Gaya MLA

WALPOLE, BRENDA. "MACMILLAN REVISED ENCYCLOPEDIA OF SCIENCE BODY AND HEALTH 6". NEW YORK: MACMILLAN REFERENCE, 1998. Text.