APA (7th ed.) Citation
Hefley, J. C., & Hefley, M. (1979). By their blood: Christian martyrs of the 20th century. Mott Media.
Chicago Style (17th ed.) Citation
Hefley, James C., and Marti Hefley. By Their Blood: Christian Martyrs of the 20th Century. Milford: Mott Media, 1979.
MLA (9th ed.) Citation
Hefley, James C., and Marti Hefley. By Their Blood: Christian Martyrs of the 20th Century. Mott Media, 1979.
Warning: These citations may not always be 100% accurate.