Gaya APA
      Liang, C, B. et al (2023).
    Student's Book: Cambridge IGCSE and O Level: Additional Mathematics .
    Singapore:
  Marshall Cavendish Education.
  
Gaya MLA
      Liang, Chua, Boon. et al.
    "Student's Book: Cambridge IGCSE and O Level: Additional Mathematics".
    
    Singapore:
  Marshall Cavendish Education,
  2023.
  Karya Cetak.