APA-viite (7. p.)
Summers, S. (2009). Friendship: Exploring its implications for the church in postmodernity. Continuum.
Chicago-viite (17. p.)
Summers, S. Friendship: Exploring Its Implications for the Church in Postmodernity. London ; New York: Continuum, 2009.
MLA-viite (9. p.)
Summers, S. Friendship: Exploring Its Implications for the Church in Postmodernity. Continuum, 2009.
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