APA (7th ed.) Citation

Brumbaugh, T. B. (1973). John Gibson in Rome: An unpublished letter.

Chicago Style (17th ed.) Citation

Brumbaugh, Thomas B. John Gibson in Rome: An Unpublished Letter. 1973.

MLA (9th ed.) Citation

Brumbaugh, Thomas B. John Gibson in Rome: An Unpublished Letter. 1973.

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