Cita APA (7a ed.)

Isaacson, E. (1954). The Middle Ages (1. publ., reprinted.). Nelson.

Cita Chicago Style (17a ed.)

Isaacson, Elisabeth. The Middle Ages. 1. publ., reprinted. London [u.a.]: Nelson, 1954.

Cita MLA (9a ed.)

Isaacson, Elisabeth. The Middle Ages. 1. publ., reprinted. Nelson, 1954.