Williams, O. (1952). Immortal poems of the English language: British and American poetry from Chaucer's time to the present day. Pocket Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Williams, Oscar. Immortal Poems of the English Language: British and American Poetry from Chaucer's Time to the Present Day. New York: Pocket Books, 1952.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Williams, Oscar. Immortal Poems of the English Language: British and American Poetry from Chaucer's Time to the Present Day. Pocket Books, 1952.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.