Haldar, R., Carpenter, C., Beddia, M., & Morgan, Z. (2022). P is for pterodactyl: The worst alphabet book ever : all the letters that misbehave and make words nearly impossible to pronounce. [Library Ideas, LLC].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Haldar, Raj, Chris Carpenter, Maria Beddia, و Zak Morgan. P Is for Pterodactyl: The Worst Alphabet Book Ever : All the Letters That Misbehave and Make Words Nearly Impossible to Pronounce. [Fairfax, Virginia]: [Library Ideas, LLC], 2022.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Haldar, Raj, et al. P Is for Pterodactyl: The Worst Alphabet Book Ever : All the Letters That Misbehave and Make Words Nearly Impossible to Pronounce. [Library Ideas, LLC], 2022.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.