This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Page b. es nudos own Juan di chodi juan from Enriqueta Elizondo Hernndez et al BP Nudos Amarres Tejidos Construcciones ISBN Cczero Howtos Knots Knots on white background
Page 2023 Free-images.com. All images are Public Domain