Cita APA (7th ed.)
Hefley, J. C., & Hefley, M. (1979). By their blood: Christian martyrs of the 20th century. Mott Media.
Cita Chicago (17th ed.)
Hefley, James C., i Marti Hefley. By Their Blood: Christian Martyrs of the 20th Century. Milford: Mott Media, 1979.
Cita MLA (9th ed.)
Hefley, James C., i Marti Hefley. By Their Blood: Christian Martyrs of the 20th Century. Mott Media, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.