APA (7th ed.) Citation

Heinemann. (1980). Certificate Mathematics: UNIT M9. Heinemann Educational Books.

Chicago Style (17th ed.) Citation

Heinemann. Certificate Mathematics: UNIT M9. Heinemann Educational Books, 1980.

MLA (9th ed.) Citation

Heinemann. Certificate Mathematics: UNIT M9. Heinemann Educational Books, 1980.

Warning: These citations may not always be 100% accurate.