: Hungarian articles do not change for number or case. They remain a or az regardless of whether the noun is plural or has a suffix (e.g., a házban – "in the house").
: Used before words beginning with a vowel (e.g., az esemény – "the event"). Key Usage Rules: Hungarian essential grammar
If you are looking for the textbook by Carol Rounds, it is a comprehensive guide covering these rules along with vowel harmony, the case system, and word order. You can find it at retailers like DiscountMags.com or Languages Direct . : Hungarian articles do not change for number or case
: Articles are often used to give a noun a generic meaning, such as "I like bananas" ( Szeretem a banánt ). Indefinite Article: egy the case system