APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

Siringo-Ringo, Ida Riani Natalis, Erna Veronika, Mugi Wahidin, en Devi Angeliana Kusumaningtiar. THE VALUE OF AIR GERM NUMBERS AT SOEKARNO HATTA AIRPORT IN 2021. Universitas Airlangga, 2022.

MLA (9e ed.) Bronvermelding

Siringo-Ringo, Ida Riani Natalis, et al. THE VALUE OF AIR GERM NUMBERS AT SOEKARNO HATTA AIRPORT IN 2021. Universitas Airlangga, 2022.