Roper, K. O., & Payant, R. P. (2014). The facility management handbook (Fourth edition.). AMACOM.
Lua i Stíl Chicago (17ú heag.)Roper, Kathy O., agus Richard P. Payant. The Facility Management Handbook. Fourth edition. Broadway, New York: AMACOM, 2014.
Lua MLA (9ú heag.)Roper, Kathy O., agus Richard P. Payant. The Facility Management Handbook. Fourth edition. AMACOM, 2014.
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