Cita APA (7th ed.)
Breitkreuz, H. (1979). Foreign Language Studies. Lang.
Cita Chicago (17th ed.)
Breitkreuz, Hartmut. Foreign Language Studies. Frankfurt a.M., Bern, Las Vegas: Lang, 1979.
Cita MLA (9th ed.)
Breitkreuz, Hartmut. Foreign Language Studies. Lang, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.