Singapur Curriculum Planning & Development Division. (2022). Geography: Upper secondary geography textbook (First published.). Ministry of Education, Government of Singapore.
Chicago-Zitierstil (17. Ausg.)Singapur Curriculum Planning & Development Division. Geography: Upper Secondary Geography Textbook. First published. Singapore: Ministry of Education, Government of Singapore, 2022.
MLA-Zitierstil (9. Ausg.)Singapur Curriculum Planning & Development Division. Geography: Upper Secondary Geography Textbook. First published. Ministry of Education, Government of Singapore, 2022.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.