APA (7 वां संस्करण) प्रशस्ति पत्र
Maidl, B., Thewes, M., Maidl, U., David, S., & Frank, S. (2014). Handbook of tunnel engineering II: Basics and additional services for design and construction. Ernst & Sohn.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Maidl, Bernhard, Markus Thewes, Ulrich Maidl, Sturge David, और Sonja Frank. Handbook of Tunnel Engineering II: Basics and Additional Services for Design and Construction. Berlin, Germany: Ernst & Sohn, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Maidl, Bernhard, et al. Handbook of Tunnel Engineering II: Basics and Additional Services for Design and Construction. Ernst & Sohn, 2014.
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