Gaya APA

KERROD, R. (1998). MACMILLAN REVISED ENCYCLOPEDIA OF SCIENCE THE HEAVENS 2 . NEW YORK: Macmilan Library Refrence.

Gaya MLA

KERROD, ROBIN. "MACMILLAN REVISED ENCYCLOPEDIA OF SCIENCE THE HEAVENS 2". NEW YORK: Macmilan Library Refrence, 1998. Text.