Gaya APA

Harwood, R. et al (2021). Chemistry for Cambridge IGCSE (Coursebook) : DIPA 2026 (Fifth edition). United Kingdom: Cambridge University Press.

Gaya MLA

Harwood, Richard. et al. "Chemistry for Cambridge IGCSE (Coursebook) : DIPA 2026". Fifth edition United Kingdom: Cambridge University Press, 2021. Art Original.