Lua APA (7ú heag.)
Johnson, D. W., & Johnson, F. P. (1975). Joining together: Group theory and group skills. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)
Johnson, David W., agus Frank P. Johnson. Joining Together: Group Theory and Group Skills. Englewood Cliffs, N.J.: Prentice-Hall, 1975.
Lua MLA (9ú heag.)
Johnson, David W., agus Frank P. Johnson. Joining Together: Group Theory and Group Skills. Prentice-Hall, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.