APA (7th ed.) Citation

Buckler, F. W. (1931). Harunu'l-Rashid and Charles the Great. The Mediaeval academy of America.

Chicago Style (17th ed.) Citation

Buckler, F. W. Harunu'l-Rashid and Charles the Great. Cambridge, Mass.: The Mediaeval academy of America, 1931.

MLA (9th ed.) Citation

Buckler, F. W. Harunu'l-Rashid and Charles the Great. The Mediaeval academy of America, 1931.