Terry traveled to Celtic lands in 1997, visiting the northern area of County Clare and the western islands of Scotland, where he attended a 10-day training in Celtic Shamanism. He will bring his experiences and family history to the performance of these stories and songs.
It is unas libretas. Unas is femenine and plural indefinite article, and it match with libretas. You do not have more options @Crissy15 in this case. @Crissy15 if you say las libretas you are using the femenine and plural definite article las. if you say unas libretas you are using the femenine and plural indefinite article unas. Crissy15.
Definite Article and Indefinite Article. a/an, the. The determiners a/an and the are called articles. They are the most common of all determiners. They come at the very beginning of a noun phrase. We divide them into indefinite and definite like this: We use indefinite to mean non-specific. Indefinite is general. We use definite to mean specific. Definite is particular. When we are talking about something in general, we use a or an. When we are talking about something in particular, we use the.