dkk, P. L. (1995). bertanam ubi - ubian. Penebar Swadaya.
Chicago Style (17th ed.) Citationdkk, Pinus Lingga. Bertanam Ubi - Ubian. Penebar Swadaya, 1995.
MLA (8th ed.) Citationdkk, Pinus Lingga. Bertanam Ubi - Ubian. Penebar Swadaya, 1995.
Warning: These citations may not always be 100% accurate.