APA (7e ed.) Bronvermelding

Horn, S. H. (1957). The spade confirms the book. Review and Herald.

Chicago (17e ed.) Bronvermelding

Horn, Siegfried H. The Spade Confirms the Book. Washington, D.c: Review and Herald, 1957.

MLA (9e ed.) Bronvermelding

Horn, Siegfried H. The Spade Confirms the Book. Review and Herald, 1957.