Cross, R. (1943). Raphael's famous key to astrology (New 4th ed.). David McKay Co..
Lua i Stíl Chicago (17ú heag.)Cross, Robert. Raphael's Famous Key to Astrology. New 4th ed. Philadelphia: David McKay Co., 1943.
Lua MLA (8ú heag.)Cross, Robert. Raphael's Famous Key to Astrology. New 4th ed. David McKay Co., 1943.
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