Nardi, P. M. (1999). Gay men's friendship: Invincible communities. University of Chicago.
Lua i Stíl Chicago (17ú heag.)Nardi, Peter M. Gay Men's Friendship: Invincible Communities. Chicago [u.a.]: University of Chicago, 1999.
Lua MLA (8ú heag.)Nardi, Peter M. Gay Men's Friendship: Invincible Communities. University of Chicago, 1999.
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