Não informado. (1883). Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton, NJ: Princeton University, Biological Laboratories, 1883.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Contributions from the Biological Laboratories in Princeton University. Princeton University, Biological Laboratories, 1883.
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