Citations Summary
Total Number of Citations: 5
Number of Titles Cited: 2
Number of Citation Sources: 4
The Heads of Cerberus (Polaris Press, 1952)
The Citadel of Fear (Paperback Library, 1970)
The Citadel of Fear (Paperback Library, 1970)
The Heads of Cerberus (Polaris Press, 1952)
The Citadel of Fear (Paperback Library, 1970)