In the example below, we've read an article by by Dingle et al. (2008) in which Marsh and Dale (2006) was cited, and the Marsh and Dale text is out of print and unable to be borrowed or downloaded from the library.
In this case, cite Marsh and Dale as the original source, followed by Dingle et al.’s work as the secondary source. Only Dingle et al.’s work appears in the reference list.
Developing therapeutic rapport with adolescents and young adults can be a long process (Marsh & Dale, 2006, as cited in Dingle et al., 2008).
Quotation (a primary source as quoted in the secondary source)
Marsh and Dale (2006, as cited in Dingle et al., 2008) stated "it may take a long time to establish trust and rapport when working with young people" (p. 196).