1
Argitaratua: c2010.
Superior document: Jumping frogs ; 3
Links: Testu osoa
2
Argitaratua: c2003.
Superior document: Jumping frogs
Links: Testu osoa
3
Argitaratua: [2011],, c1983.
Superior document: [Mark Twain library ; 4]
Links: Testu osoa
4
Argitaratua: [2011],, c1995.
Superior document: The Mark Twain library ; [8]
Links: Testu osoa