Otten, A. (1970). Hessen Companion. University of México.
Cita Chicago Style (17a ed.)Otten, Anna. Hessen Companion. Albuquerque, Alemania: University of México, 1970.
Cita MLA (9a ed.)Otten, Anna. Hessen Companion. University of México, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.