Nisbet, J. (2024). David Douglas: A naturalist at work : an illustrated exploration across two centuries in the Pacific Northwest (Paperback edition.). Washington State University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nisbet, Jack. David Douglas: A Naturalist at Work : An Illustrated Exploration Across Two Centuries in the Pacific Northwest. Paperback edition. Pullman, Washington: Washington State University Press, 2024.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Nisbet, Jack. David Douglas: A Naturalist at Work : An Illustrated Exploration Across Two Centuries in the Pacific Northwest. Paperback edition. Washington State University Press, 2024.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.