ebrary, Inc, & Goodfellow, R. J. F. (2011). Concrete for underground structures: Guidelines for design and construction. Society for Mining, Metallurgy, and Exploration.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, و Robert J. F. Goodfellow. Concrete for Underground Structures: Guidelines for Design and Construction. Englewood, Colo.: Society for Mining, Metallurgy, and Exploration, 2011.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, و Robert J. F. Goodfellow. Concrete for Underground Structures: Guidelines for Design and Construction. Society for Mining, Metallurgy, and Exploration, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.