APA aipamena

WORLD BOOK. (1990). WORLD BOOK'S SCIENCE DESK REFERENCE. WORLD BOOK INC.

Chicago Style aipamena

WORLD BOOK. WORLD BOOK'S SCIENCE DESK REFERENCE. CHICAGO: WORLD BOOK INC, 1990.

MLA aipamena

WORLD BOOK. WORLD BOOK'S SCIENCE DESK REFERENCE. WORLD BOOK INC, 1990.