brian Ratcliff, d. (2004). As Level and A level Chemistry. Cambridge.
Chicago Style (17th ed.) Citationbrian Ratcliff, dkk. As Level and A Level Chemistry. Cambridge, 2004.
MLA (8th ed.) Citationbrian Ratcliff, dkk. As Level and A Level Chemistry. Cambridge, 2004.
Warning: These citations may not always be 100% accurate.