Spoczynska, J. O. (1976). An age of fishes: The development of the most successful vertebrates. Charles Scribner's Sons.
Lua i Stíl Chicago (17ú heag.)Spoczynska, Joy O. An Age of Fishes: The Development of the Most Successful Vertebrates. New York: Charles Scribner's Sons, 1976.
Lua MLA (9ú heag.)Spoczynska, Joy O. An Age of Fishes: The Development of the Most Successful Vertebrates. Charles Scribner's Sons, 1976.
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