Amazon.com: HIMI Gouache Pad 7X10''(98lb/160g) 50 Sheets Mix Paper Pad, Side Wire Bound, Fine Texture, in Gouache Acrylic Art Pad for Sketching, Ink Sketch Book, Art Supplies Drawing Pad Gift (Square) :
The best papers for gouache painting — Lena Rivo
What is Gouache? - Answering your GOUACHE FAQs - The Fearless Brush
My Favorite Sketchbooks as of 2023 - The Fearless Brush
What sketchbook for illustration to get - Marloes De Vries - illustrator and author of (children's) books