APA Style

Morehead, Albert H.. (1966). Ilustrated World Encyclopedia Vol. 21 Index & Study Guide (Vol. 21.). New York: Illustrated World Encyclopedia.

Chicago Style

Morehead, Albert H.. Ilustrated World Encyclopedia Vol. 21 Index & Study Guide. Vol. 21. New York: Illustrated World Encyclopedia, 1966. Text.

MLA Style

Morehead, Albert H.. Ilustrated World Encyclopedia Vol. 21 Index & Study Guide. Vol. 21. New York: Illustrated World Encyclopedia, 1966. Text.

Turabian Style

Morehead, Albert H.. Ilustrated World Encyclopedia Vol. 21 Index & Study Guide. Vol. 21. New York: Illustrated World Encyclopedia, 1966. Print.