Loeb, J. (1903). The fertilization of the egg of sea-urchin [Strongylocentrotus purpuratus and Strongylocentrotus franciscanus] by the sperm of the starfish [Asterias ochracea]. Berkeley: The University Press.

Loeb, Jacques. The Fertilization of the Egg of Sea-urchin [Strongylocentrotus Purpuratus and Strongylocentrotus Franciscanus] By the Sperm of the Starfish [Asterias Ochracea]. Berkeley: The University Press, 1903.

Loeb, Jacques. The Fertilization of the Egg of Sea-urchin [Strongylocentrotus Purpuratus and Strongylocentrotus Franciscanus] By the Sperm of the Starfish [Asterias Ochracea]. Berkeley: The University Press, 1903.