Correct spelling, explanation: texts is an English word that comes from the Latin words textus and textere. Later, texts appeared in Old French, too, in which it had the form of texte and in the Middle Ages texts finally reached English. In modern English, texts is a popular noun and a verb.

Definition of texts:
1. noun (plural) – printed or written materials; quotations from a book, article, etc.,
I still have got a number of source texts to read before I complete my thesis.
Undoubtedly, it’s my favorite book and I’ve highlighted the best texts there.
2. verb (3rd singular form) – to write a message with a mobile
John texts me every few minutes, which is quite irritating when I’m at work.

Expressions with texts:
A few common expressions with texts include: source texts, legal texts, and recommended texts.
Once you complete your thesis, you need to attach the list of your source texts, which you were using while writing.
For me, as a translator, legal texts are the most difficult to work with as they usually contain a lot of specialized vocabulary.
My tutor gave me a long list of recommended texts, which I should read before taking an exam.

Incorrect spelling, explanation: the spelling of the word texts shouldn’t cause any trouble as the word is short and simple. Still, however, both learners of English and its native speakers tend to add the -e letter before the last -s letter, which makes the pronunciation of the word easier and results in incorrect form textes. The only acceptable spelling of the word is texts.