Cita APA (7a ed.)

Fradkin, R. O. (2017). Indications and conjectures. The background of an original historian. Grupo Prohistoria.

Cita Chicago Style (17a ed.)

Fradkin, Raúl O. Indications and Conjectures. The Background of an Original Historian. Grupo Prohistoria, 2017.

Cita MLA (8a ed.)

Fradkin, Raúl O. Indications and Conjectures. The Background of an Original Historian. Grupo Prohistoria, 2017.