Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
Bibliography is regular. It follows the -ies Conversion rule.
Use plural verbs: "The bibliographies are ready" (not "is ready").
Yes. The plural bibliographies is standard across all English variants.
The word bibliography follows the standard English pluralization rule. When forming the plural, bibliography becomes bibliographies. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why bibliography becomes bibliographies helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using bibliographies in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The bibliographies are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.