Amazon.com: Cordoba C10 CD Classical, All-Solid Woods, Acoustic Nylon String Guitar, Luthier Series, with Polyfoam Case : Musical Instruments
Ball End Nylon Guitar Strings – Dean Markley
Does it make sense to have three steel and three nylon string on a guitar? Basically half steel, half nylon. That's the way my acoustic guitar was bought. - Quora
How to Choose Classical Guitar Strings (Expert Advice)
How to Change Classical Guitar Strings (with Pictures) - wikiHow
Can I Use Nylon Strings On Acoustic Guitar? Read Before Doing So – Rock Guitar Universe
Best 5 guitar strings for kids guitars - GuitarEuroShop.com