Παραπομπή σε μορφή APA (7η εκδ.)

Douglas, A. E. (2023). Nature on the doorstep: A year of letters. Comstock Publishing Associates, an imprint of Cornell University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Douglas, A. E. Nature on the Doorstep: A Year of Letters. Ithaca: Comstock Publishing Associates, an imprint of Cornell University Press, 2023.

Παραπομπή σε μορφή MLA (9th εκδ.)

Douglas, A. E. Nature on the Doorstep: A Year of Letters. Comstock Publishing Associates, an imprint of Cornell University Press, 2023.