Palungkun, R. (1999). Sukses Beternak Cacing Tanah Lumbricus Rubellus/Rony Palungkun. Penebar Swadaya.
Chicago Style (17th ed.) CitationPalungkun, Rony. Sukses Beternak Cacing Tanah Lumbricus Rubellus/Rony Palungkun. Penebar Swadaya, 1999.
MLA (8th ed.) CitationPalungkun, Rony. Sukses Beternak Cacing Tanah Lumbricus Rubellus/Rony Palungkun. Penebar Swadaya, 1999.
Warning: These citations may not always be 100% accurate.