Hubungan antara praktik ritual tidur dan kualitas tidur pada siswa sekolah menengah pertama = The correlation between sleep hygiene practice and sleep quality in junior high school's students

Hubungan kecanduan penggunaan smartphone dengan kualitas tidur pada mahasiswa RIK UI = The correlation between smartphone addiction and sleep quality among college students at RIK UI / Sarip Hidayat

Hubungan Penggunaan Smartphone dengan Kualitas Tidur Siswa SMA Negeri 1 Kebumen = The Correlation between Smartphones Usage and Sleep Quality of Students at State Senior High School 1 Kebumen

Hubungan intensitas penggunaan ponsel pintar dengan kualitas tidur remaja SMA di wilayah Jakarta Timur = The correlation between intensity of the smartphone usage and sleep quality in high school students in East Jakarta

Hubungan kualitas tidur dengan konsentrasi belajar pada siswa Sekolah Menengah Atas (SMA) di Kota Depok = The relationship between sleep quality and learning concentration in high school students at Depok