If cost is an issue, consider these open/free thermodynamics resources:
Wark’s text follows a logical progression essential for engineering students: thermodynamics kenneth wark pdf 2021
The "2021" date often appearing in searches is frequently linked to digital archiving activities rather than a new print edition. For instance, several digital versions of Wark’s 1988 edition were uploaded or updated on the Internet Archive in March and April of 2021. Finding the Text Responsibly Important Copyright Note