APA-čujuhus (7. p.)

Enger, F. (1957). Letters for special occasions. Mc Graw Hill.

Chicago-čujuhus (17. p.)

Enger, Frank. Letters for Special Occasions. New York: Mc Graw Hill, 1957.

MLA-čujuhus (9. p.)

Enger, Frank. Letters for Special Occasions. Mc Graw Hill, 1957.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.