Dyfyniad APA
Johnson, D. W., & Johnson, F. P. (1975). Joining together: Group theory and group skills. Prentice-Hall.
Dyfyniad Arddull Chicago
Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. Englewood Cliffs, N.J.: Prentice-Hall, 1975.
Dyfyniad MLA
Johnson, David W., and Frank P. Johnson. Joining Together: Group Theory and Group Skills. Prentice-Hall, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.