Legler, D. (2024). Housekeeping operations. 3G E-Learning LLC.
Lua i Stíl Chicago (17ú heag.)Legler, Daniel. Housekeeping Operations. New York, USA: 3G E-Learning LLC, 2024.
Lua MLA (9ú heag.)Legler, Daniel. Housekeeping Operations. 3G E-Learning LLC, 2024.
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