APA (7th ed.) Citation

Friedman, W. J. (1990). About time: Inventing the fourth dimension. MIT.

Chicago Style (17th ed.) Citation

Friedman, William J. About Time: Inventing the Fourth Dimension. Cambridge (Massachusetts) [etc.]: MIT, 1990.

MLA (9th ed.) Citation

Friedman, William J. About Time: Inventing the Fourth Dimension. MIT, 1990.

Warning: These citations may not always be 100% accurate.