Franklin, J. F. (1961). A guide to seedling identification for 25 conifers of the Pacific Northwest. Pacific Northwest Forest and Range Experiment Station.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Franklin, Jerry F. A Guide to Seedling Identification for 25 Conifers of the Pacific Northwest. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, 1961.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Franklin, Jerry F. A Guide to Seedling Identification for 25 Conifers of the Pacific Northwest. Pacific Northwest Forest and Range Experiment Station, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.