"Meaning in Many: The Symbolism of Numbers, " Symbol & Magic in Egyptian Art, by Richard H. Wilkinson[en], Thames and Hudson, 1994, page 127.
"Meaning in Many: The Symbolism of Numbers, " Symbol & Magic in Egyptian Art, by Richard H. Wilkinson[en], Thames and Hudson, 1994, page 131–133.
"The Tradition of Seven Lean Years in Egypt, " The Ancient Near East Volume 1, Джеймс Беннетт Прітчард[en], ed., page 24-27. Princeton University Press, 1958.
"The Tradition of Seven Lean Years in Egypt, " The Ancient Near East Volume 1, James B. Pritchard[en], ed., page 26. Princeton University Press, 1958.
