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- "Half-rhyme." Oxford Reference. Feb. 13, 2022. <https://www.oxfordreference.com/view/10.1093/oi/authority.20110803095916473>.
- "What Is Slant Rhyme?." Masterclass. Sep. 9, 2021. Feb. 13, 2022. <https://www.masterclass.com/articles/what-is-slant-rhyme-understanding-the-definitions-of-slant-rhyme-and-why-slant-rhymes-are-useful-in-writing-with-examples#what-is-a-slant-rhyme>.
- William Butler Yeats. "Sailing to Byzantium." Poetry Foundation. 1933. Feb. 13, 2022. <https://www.poetryfoundation.org/poems/43291/sailing-to-byzantium>.
- Seamus Heaney. "Digging." Poetry Foundation. 1966. Feb. 13, 2022. <https://www.poetryfoundation.org/poems/47555/digging>.