APA (7e ed.) Bronvermelding

Po, R. A. U. (2008). An analysis of the comprehension of pictograms used in the globally harmonized systems for hazard classification and labeling of chemical (GHS) and its suitability for Filipinos.

Chicago (17e ed.) Bronvermelding

Po, Ronald Aaron Uy. An Analysis of the Comprehension of Pictograms Used in the Globally Harmonized Systems for Hazard Classification and Labeling of Chemical (GHS) and Its Suitability for Filipinos. 2008.

MLA (9e ed.) Bronvermelding

Po, Ronald Aaron Uy. An Analysis of the Comprehension of Pictograms Used in the Globally Harmonized Systems for Hazard Classification and Labeling of Chemical (GHS) and Its Suitability for Filipinos. 2008.