Riduwan. Skala pengukuran Variabel Variabel penelitian. Alfabeta.
Chicago Style (17th ed.) CitationRiduwan. Skala Pengukuran Variabel Variabel Penelitian. Alfabeta.
MLA (8th ed.) CitationRiduwan. Skala Pengukuran Variabel Variabel Penelitian. Alfabeta.
Warning: These citations may not always be 100% accurate.