Ash, M. G. (1990). Psychology in twentieth-century Germany: Science and prefession. German professions, eighteen hundred to nineteen hundred and fifty.
Styl cytowania ChicagoAsh, Mitchell G. "Psychology in Twentieth-century Germany: Science and Prefession." German Professions, Eighteen Hundred to Nineteen Hundred and Fifty 1990.
Styl cytowania MLAAsh, Mitchell G. "Psychology in Twentieth-century Germany: Science and Prefession." German Professions, Eighteen Hundred to Nineteen Hundred and Fifty, 1990.
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