Παραπομπή σε μορφή APA (7η εκδ.)

De Kay, J. E. (1826). Anniversary address on the progress of the natural sciences in the United States: Delivered before the Lyceum of Natural History of New York, Feb. 1826. G. & C. Carvill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

De Kay, James E. Anniversary Address on the Progress of the Natural Sciences in the United States: Delivered Before the Lyceum of Natural History of New York, Feb. 1826. New York: G. & C. Carvill, 1826.

Παραπομπή σε μορφή MLA (8th εκδ.)

De Kay, James E. Anniversary Address on the Progress of the Natural Sciences in the United States: Delivered Before the Lyceum of Natural History of New York, Feb. 1826. G. & C. Carvill, 1826.