APA (7e ed.) Bronvermelding

Buchanan, S. (1938). The doctrine of signatures: A defence of theory in medicine. K. Paul, Trench, Trubner & co., ltd..

Chicago (17e ed.) Bronvermelding

Buchanan, Scott. The Doctrine of Signatures: A Defence of Theory in Medicine. London: K. Paul, Trench, Trubner & co., ltd., 1938.

MLA (8e ed.) Bronvermelding

Buchanan, Scott. The Doctrine of Signatures: A Defence of Theory in Medicine. K. Paul, Trench, Trubner & co., ltd., 1938.