APA (7e ed.) Bronvermelding

Langdon, E. L. The Life of Roger Langdon, Told by himself. With additions by his daughter Ellen.

Chicago (17e ed.) Bronvermelding

Langdon, Ellen; Langdon. The Life of Roger Langdon, Told by Himself. With Additions by His Daughter Ellen.

MLA (9e ed.) Bronvermelding

Langdon, Ellen; Langdon. The Life of Roger Langdon, Told by Himself. With Additions by His Daughter Ellen.

Let op: Deze citaties zijn niet altijd 100% accuraat.