APA (7th ed.) Citation

Smith, G. R. (1997). Studies in the medieval history of the Yemen and South Arabia. Variorum collected studies series.

Chicago Style (17th ed.) Citation

Smith, G. Rex. "Studies in the Medieval History of the Yemen and South Arabia." Variorum Collected Studies Series 1997.

MLA (8th ed.) Citation

Smith, G. Rex. "Studies in the Medieval History of the Yemen and South Arabia." Variorum Collected Studies Series, 1997.

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