Cita APA (7a ed.)

Lyon, B. (1974). Henri Pirenne: A biographical and intellectual study. E. Story-Scientia.

Cita Chicago Style (17a ed.)

Lyon, Bryce. Henri Pirenne: A Biographical and Intellectual Study. Ghent: E. Story-Scientia, 1974.

Cita MLA (9a ed.)

Lyon, Bryce. Henri Pirenne: A Biographical and Intellectual Study. E. Story-Scientia, 1974.