อ้างอิง ของ Nepenthes

อ้างอิง ของ Nepenthes_tobaica

1 2 3 4 5 6 7 Clarke, C.M. 2001. Nepenthes of Sumatra and Peninsular Malaysia. Natural History Publications (Borneo), Kota Kinabalu.
1 2 Shivas, R.G. 1984. The Lake Toba Nepenthes.PDF Carnivorous Plant Newsletter 13 (1) : 15–16.

Salmon, B. & R. Maulder 1999. Notes on Nepenthes from Northern Sumatra. Carnivorous Plant Newsletter 28 (1) : 14-18.
Thornhill, A.H., I.S. Harper & N.D. Hallam 2008. The Development of the Digestive Glands and Enzymes in the Pitchers of Three Nepenthes Species: N. alata, N. tobaica, and N. ventricosa (Nepenthaceae). International Journal of Plant Sciences 169 (5) : 615–624.
Hopkins, M., R. Maulder & B.[R.] Salmon 1990. A real nice trip to Southeast Asia.PDF (1.72 MiB) Carnivorous Plant Newsletter 19 (1–2) : 19–28.

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