APA Style

HARRISON, Charles H.. (1972). Free to learn; unlocking and ungrading American education (10th ed). New Jersey: Prentice-Hall,Inc..

Chicago Style

HARRISON, Charles H.. Free to learn; unlocking and ungrading American education. 10th ed New Jersey: Prentice-Hall,Inc., 1972. Text.

MLA Style

HARRISON, Charles H.. Free to learn; unlocking and ungrading American education. 10th ed New Jersey: Prentice-Hall,Inc., 1972. Text.

Turabian Style

HARRISON, Charles H.. Free to learn; unlocking and ungrading American education. 10th ed New Jersey: Prentice-Hall,Inc., 1972. Print.