APA-čujuhus (7. p.)
Hewitt, G. (1978). How to sing. EMI Music.
Chicago-čujuhus (17. p.)
Hewitt, Graham. How to Sing. London: EMI Music, 1978.
MLA-čujuhus (9. p.)
Hewitt, Graham. How to Sing. EMI Music, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.