Lua APA (7ú heag.)

Villanueva, R., & Marbella, W. (2012). International Rice Research Institute. DZUP.

Lua i Stíl Chicago (17ú heag.)

Villanueva, Raymund, agus Willie Marbella. International Rice Research Institute. Quezon City: DZUP, 2012.

Lua MLA (9ú heag.)

Villanueva, Raymund, agus Willie Marbella. International Rice Research Institute. DZUP, 2012.

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