APA-Zitierstil (7. Ausg.)

Robertson, J. P., & Robertson, W. P. (1970). Letters on Paraguay: Comprising an account of a four years' residence in that Republic, under the Government of the Dictator Francia (2d ed.). AMS Press.

Chicago-Zitierstil (17. Ausg.)

Robertson, J. P., und Wm. Parish Robertson. Letters on Paraguay: Comprising an Account of a Four Years' Residence in That Republic, Under the Government of the Dictator Francia. 2d ed. New York: AMS Press, 1970.

MLA-Zitierstil (8. Ausg.)

Robertson, J. P., und Wm. Parish Robertson. Letters on Paraguay: Comprising an Account of a Four Years' Residence in That Republic, Under the Government of the Dictator Francia. 2d ed. AMS Press, 1970.