APA (7th ed.) Citation

(1991). A history of Zoroastrianism. A history of Zoroastrianism.

Chicago Style (17th ed.) Citation

"A History of Zoroastrianism." A History of Zoroastrianism 1991.

MLA (8th ed.) Citation

"A History of Zoroastrianism." A History of Zoroastrianism, 1991.

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