(1982). Machine-readable data files from the Madison limestone and northern Great Plains regional aquifer system analysis projects, Montana, Nebraska, North Dakota, South Dakota, and Wyoming / by Joe S. Downey.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Machine-readable Data Files from the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis Projects, Montana, Nebraska, North Dakota, South Dakota, and Wyoming / by Joe S. Downey. 1982.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Machine-readable Data Files from the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis Projects, Montana, Nebraska, North Dakota, South Dakota, and Wyoming / by Joe S. Downey. 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.