APA (7th ed.) Citation

Homan, H. W. (1971). Letters to the martyrs. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Homan, Helen Walker. Letters to the Martyrs. Freeport, N.Y.: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Homan, Helen Walker. Letters to the Martyrs. Books for Libraries Press, 1971.