APA (7e ed.) Bronvermelding

Ley, R. J. Francis Bacon, Galileo, and the Brechtian theater: Ralph J. Ley. Essays on Brecht : theater and politics.(1974).

Chicago (17e ed.) Bronvermelding

Ley, Ralph J. "Francis Bacon, Galileo, and the Brechtian Theater: Ralph J. Ley." Essays on Brecht : Theater and Politics.(1974) .

MLA (8e ed.) Bronvermelding

Ley, Ralph J. "Francis Bacon, Galileo, and the Brechtian Theater: Ralph J. Ley." Essays on Brecht : Theater and Politics.(1974), .