Cita APA (7th ed.)

Optic, O. Northern Lands; Or, Young America in Russia and Prussia.

Cita Chicago (17th ed.)

Optic, Oliver. Northern Lands; Or, Young America in Russia and Prussia.

Cita MLA (9th ed.)

Optic, Oliver. Northern Lands; Or, Young America in Russia and Prussia.

Atenció: Aquestes cites poden no estar 100% correctes.