Gaya APA

Fagan, J, &, S, I, L, , (. (1973). What is Gestalt-therapy? . New York dll: New York dll Perennial Library.

Gaya MLA

Fagan, Joen, &, Shepherd,, Irma, Lee, , (ed.). "What is Gestalt-therapy? ". New York dll: New York dll Perennial Library, 1973. Buku.