Packer, J. (1984). Keep in step with the spirit. Inter-Varsity.
Lua i Stíl Chicago (17ú heag.)Packer, J.I. Keep in Step with the Spirit. New Jersey: Inter-Varsity, 1984.
Lua MLA (9ú heag.)Packer, J.I. Keep in Step with the Spirit. Inter-Varsity, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.