Cita APA (7a ed.)

Pearson, J. (1950). Rare americana and old spanish books. John Pearson.

Cita Chicago Style (17a ed.)

Pearson, John. Rare Americana and Old Spanish Books. London: John Pearson, 1950.

Cita MLA (8a ed.)

Pearson, John. Rare Americana and Old Spanish Books. John Pearson, 1950.