United States. Soil Conservation Service. (1953). Summary of snow survey data for the Columbia River Basin: Within the States of Idaho, Washington, Oregon, Montana, Nevada, and Wyoming and The Province of British Columbia, including all past measurements. The Service,].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Soil Conservation Service. Summary of Snow Survey Data for the Columbia River Basin: Within the States of Idaho, Washington, Oregon, Montana, Nevada, and Wyoming and The Province of British Columbia, Including All Past Measurements. [Portland, Or.: The Service,], 1953.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Soil Conservation Service. Summary of Snow Survey Data for the Columbia River Basin: Within the States of Idaho, Washington, Oregon, Montana, Nevada, and Wyoming and The Province of British Columbia, Including All Past Measurements. The Service,], 1953.