by Setiaman, Sobur, Abdullah, Syahfirin, Kholil, Kholil, Sulistyadi, Kohar
Published in South East Asia nursing research (30.09.2019)

by Hakim, Imam Nur, Eddyono, Fauziah, Abdullah, Syahfirin
Published in JUMPA (Denpasar) (25.07.2022)

by Hadian, Cece, ., Kholil, Abdullah, Syahfirin
Published in Current Journal of Applied Science and Technology (28.08.2019)

by Abdullah, Syahfirin, Purwanto Utomo, Eko, Ramli, Soehatman
Published in International journal of advanced research (Indore) (31.01.2021)

by Hakim, Imam Nur, Fauziah Eddyono, Syahfirin Abdullah
Published in Jurnal Kepariwisataan (29.12.2022)

by Prasetya, Ade Yoga, Abdullah, Syahfirin, Sembiring, Edison Cholia, Setyawati, Ekaterina
Published in Management Studies and Entrepreneurship Journal (MSEJ) (30.05.2024)

by Rina, Dewi Nata, Sukwika, Tatan, Abdullah, Syahfirin
Published in Journal of Applied Management Research (31.12.2021)

by Amalia, Krisna, Hardiyanto, Toto, Abdullah, Syahfirin
Published in Journal of Applied Management Research (31.12.2021)

by Madjowa, Imran Saleh, Levyda, Levyda, Abdullah, Syahfirin
Published in Jesya (01.01.2023)

by Widjaja, Agung Nugraha, Abdullah, Syahfirin
Published in Journal of Applied Management Research (28.05.2021)

by Santoso, Santoso, Abdullah, Syahfirin, Ramli, Soehatman
Published in Jurnal Syntax Admiration (24.03.2022)

by Maulana, Septi, Abdullah, Syahfirin, Levyda, Levyda
Published in Journal of Applied Management Research (31.12.2021)

by Sinta Maria Purba, Wellyn, Abdullah, Syahfirin, Cholia Sembiring, Edison
Published in Jurnal Syntax Transformation (23.11.2021)