Cita APA (7a ed.)

Keller, G. (1968). David Livingstone. Egle.

Cita Chicago Style (17a ed.)

Keller, Gottfried. David Livingstone. Gossau: Egle, 1968.

Cita MLA (9a ed.)

Keller, Gottfried. David Livingstone. Egle, 1968.