Gaya APA

Skinner, G. et al (2025). Evironment Management for Cambridge IGCSE and O Level (Coursebook) : DIPA 2026 (Second Edition). United Kingdom: Cambridge University Press & Assesment.

Gaya MLA

Skinner, Gary. et al. "Evironment Management for Cambridge IGCSE and O Level (Coursebook) : DIPA 2026". Second Edition United Kingdom: Cambridge University Press & Assesment, 2025. Art Original.