APA (7 वां संस्करण) प्रशस्ति पत्र
Gräfe, W. (2015). Time-dependent mechanical properties of solids: Relaxation of stress and density, strength (fatigue). Trans Tech Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Gräfe, Wolfgang. Time-dependent Mechanical Properties of Solids: Relaxation of Stress and Density, Strength (fatigue). Pfäffikon, Zurich, Switzerland: Trans Tech Publications, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Gräfe, Wolfgang. Time-dependent Mechanical Properties of Solids: Relaxation of Stress and Density, Strength (fatigue). Trans Tech Publications, 2015.
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