......... G.C.E.A/L Chemistry Answers with Explanations. Astan Publications.
Chicago Style (17th ed.) Citation......... G.C.E.A/L Chemistry Answers with Explanations. Cololmbo: Astan Publications.
MLA (9th ed.) Citation......... G.C.E.A/L Chemistry Answers with Explanations. Astan Publications.
Warning: These citations may not always be 100% accurate.