Etkes, I., Salmon, Y., & Kas, Y. (1980). Studies in the history of Jewish society: In the middle ages and in the modern period ; presented to Prof. Jacob Katz on his seventy-fifth birthday by his students and friends. Magnes Press.

Etkes, I., Yosef Salmon, and Ya'aqov Kas. Studies in the History of Jewish Society: In the Middle Ages and in the Modern Period ; Presented to Prof. Jacob Katz on His Seventy-fifth Birthday by His Students and Friends. Jerusalem: Magnes Press, 1980.

Etkes, I., et al. Studies in the History of Jewish Society: In the Middle Ages and in the Modern Period ; Presented to Prof. Jacob Katz on His Seventy-fifth Birthday by His Students and Friends. Magnes Press, 1980.