Cita APA (7a ed.)

Salter, E. (1969). Piers Plowman: An introduction (2. ed.). Blackwell.

Cita Chicago Style (17a ed.)

Salter, Elizabeth. Piers Plowman: An Introduction. 2. ed. Oxford: Blackwell, 1969.

Cita MLA (9a ed.)

Salter, Elizabeth. Piers Plowman: An Introduction. 2. ed. Blackwell, 1969.