Marpaung, W. (2015). Pengantar ilmu falak. Prenadamedia.
Chicago Style (17th ed.) CitationMarpaung, Watni. Pengantar Ilmu Falak. Prenadamedia, 2015.
MLA (8th ed.) CitationMarpaung, Watni. Pengantar Ilmu Falak. Prenadamedia, 2015.
Warning: These citations may not always be 100% accurate.