APA-čujuhus (7. p.)
Tada, J. E., & Estes, S. (1978). A step further. Zondervan Pub. House.
Chicago-čujuhus (17. p.)
Tada, Joni Eareckson, juo Steve Estes. A Step Further. Grand Rapids: Zondervan Pub. House, 1978.
MLA-čujuhus (9. p.)
Tada, Joni Eareckson, juo Steve Estes. A Step Further. Zondervan Pub. House, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.