Studi penambahan (spiking) analit (-endosulfan dan bifentrin) dan proses homogenisasi pada pengembangan bahan acuan pestisida dalam teh hitam = Study of the spiking of analytes (-endosulfan and bifenthrin) and homogenization process on the development of reference material of pesticide residue in black tea - Dyah Styarini, author (2012)