Riduwan. (2014). Metode & Teknik Menyusun Proposal Penelitian. Gramedia.
Chicago Style (17th ed.) CitationRiduwan. Metode & Teknik Menyusun Proposal Penelitian. Gramedia, 2014.
MLA (8th ed.) CitationRiduwan. Metode & Teknik Menyusun Proposal Penelitian. Gramedia, 2014.
Warning: These citations may not always be 100% accurate.