Siringo-Ringo, I. R. N., Veronika, E., Wahidin, M., & Kusumaningtiar, D. A. (2022). THE VALUE OF AIR GERM NUMBERS AT SOEKARNO HATTA AIRPORT IN 2021. Universitas Airlangga.
Čikaški stil citiranja (17. izdanje)Siringo-Ringo, Ida Riani Natalis, Erna Veronika, Mugi Wahidin, i Devi Angeliana Kusumaningtiar. THE VALUE OF AIR GERM NUMBERS AT SOEKARNO HATTA AIRPORT IN 2021. Universitas Airlangga, 2022.
MLA način citiranja (9. izdanje)Siringo-Ringo, Ida Riani Natalis, et al. THE VALUE OF AIR GERM NUMBERS AT SOEKARNO HATTA AIRPORT IN 2021. Universitas Airlangga, 2022.
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