Julia, Didier, author
Paris, Librairie Larousse
Buku Referensi
Bazin, Germain
Milano Frattelli Fabri 1968
Buku Referensi
Mundt, Barbara
Fratelli Fabri, 1969
Buku Referensi
Leroi-Gourhan Andre
Paris : Albin Michel, 1936
Buku Referensi
Benard, Jean-Paul
Linguatech , 1979
Buku Teks