Tilde, A. C., & Payawal, P. C. (1992). Commercial honey in the Philippines I. pollen grains analysis. Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist).
Citazione stile Chigago Style (17a edizione)Tilde, Aurora C., e Pacifico C. Payawal. "Commercial Honey in the Philippines I. Pollen Grains Analysis." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) 1992.
Citatione MLA (9a ed.)Tilde, Aurora C., e Pacifico C. Payawal. "Commercial Honey in the Philippines I. Pollen Grains Analysis." Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist), 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.