Schwede, Karl (2005), "Gluing schemes and a scheme without closed points", Recent progress in arithmetic and algebraic geometry, Contemp. Math., vol. 386, Amer. Math. Soc., Providence, RI, pp. 157–172, doi:10.1090/conm/386/07222, ISBN978-0-8218-3401-5, MR2182775. See in particular Proposition 4.1.
doi.org
Schwede, Karl (2005), "Gluing schemes and a scheme without closed points", Recent progress in arithmetic and algebraic geometry, Contemp. Math., vol. 386, Amer. Math. Soc., Providence, RI, pp. 157–172, doi:10.1090/conm/386/07222, ISBN978-0-8218-3401-5, MR2182775. See in particular Proposition 4.1.