RYAN, J. (1960). Learning to swim is fun. The Ronald Press.
Chicago-čujuhus (17. p.)RYAN, Jack. Learning to Swim Is Fun. New York: The Ronald Press, 1960.
MLA-čujuhus (9. p.)RYAN, Jack. Learning to Swim Is Fun. The Ronald Press, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.