VERMA P S. (2022). SCIENCE FOR NINTH CLASS PART 3 BIOLOGY (2022.). S CHAND PUBLISHING.
Lua i Stíl Chicago (17ú heag.)VERMA P S. SCIENCE FOR NINTH CLASS PART 3 BIOLOGY. 2022. NEW DELHI: S CHAND PUBLISHING, 2022.
Lua MLA (9ú heag.)VERMA P S. SCIENCE FOR NINTH CLASS PART 3 BIOLOGY. 2022. S CHAND PUBLISHING, 2022.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.