Schmitz, H. The land surveyor: Hanns-Josef Ortheil's search for his poetic home / Helmut Schmitz. Contemporary German writers, their aesthetics and their language.(1996).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Schmitz, Helmut. "The Land Surveyor: Hanns-Josef Ortheil's Search for His Poetic Home / Helmut Schmitz." Contemporary German Writers, Their Aesthetics and Their Language.(1996) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Schmitz, Helmut. "The Land Surveyor: Hanns-Josef Ortheil's Search for His Poetic Home / Helmut Schmitz." Contemporary German Writers, Their Aesthetics and Their Language.(1996), .
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