APA (7th ed.) Citation

Bullard Sir & Hodgkin. (1993). Two kings in Arabia: Letters from Jeddah, 1923-5 and 1936-9. Ithaca.

Chicago Style (17th ed.) Citation

Bullard Sir and Hodgkin. Two Kings in Arabia: Letters from Jeddah, 1923-5 and 1936-9. Reading: Ithaca, 1993.

MLA (9th ed.) Citation

Bullard Sir and Hodgkin. Two Kings in Arabia: Letters from Jeddah, 1923-5 and 1936-9. Ithaca, 1993.