We’ve had a few students use Patternmaking for Menswear by Myoungok Kim and Injoo Kim a few times, most recently by Jae to make a Fall hoodie.  

Amazon says of it:

This comprehensive men’s patternmaking text covers many different garment types and design elements, including patternmaking techniques for both woven and knit fabrics. The step-by-step format with accompanying detailed illustrations is appropriate for beginning to advanced students, as well as the industry professionals looking to sharpen their patternmaking skill. Photographs provide examples of completed garments on the dress form and clear illustrations are highlighted with color to show precisely what to do at each step of the patternmaking process.

Noting the subtle difference between patternmaking for men versus women, the authors provide readers with a complete understanding of the male anatomy, how to take measurements and fitting techniques. Patternmaking for Menswear has a unique modular organization, moving from basic sloper development to detailing slim-fit versus classic-fit garments with design details grouped together to allow readers to combine them to create unlimited design variations. The text includes a section on fit problems and solutions that can be referenced after making a muslin for better fit. Instructions on how to add proper seam allowances to woven and knit patterns are also included.With many fashion-forward and on-trend patterns, this book is an indispensible resource for creating modern and professional menswear designs.

And they are correct, with the caveat that the more beginner to intermediate sewer is going to find it particularly challenging.

As far as drafting books are concerned, the instructions and drafting geometry in this book are substantially correct and true.  It isn’t unusual to find small errors here and there in any drafting textbook, but this is relatively free of them.  Highly recommended if you want to get into the world of men’s clothing and design.