Menéndez Pidal, Ramón

Morton, J.B.

Parsons, W.R. (William), and (ill.)Mould, Shelley

Quintana, Marta

Sankt Jakobus-Bruderschaft Düsseldorf

Starkie, Walter (illustrated by Arthur Rackham)

Tuna de Derecho

Tuna de Peritos de Jaen

Tuna Universitaria Compostelana

Waddell, Helen