APA (7th ed.) Citation

Harthan, J. (1977). Books of hours and their owners / (by) John Harthan. Thames and Hudson.

Chicago Style (17th ed.) Citation

Harthan, John. Books of Hours and Their Owners / (by) John Harthan. (London): Thames and Hudson, 1977.

MLA (9th ed.) Citation

Harthan, John. Books of Hours and Their Owners / (by) John Harthan. Thames and Hudson, 1977.

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