APA (7th ed.) Citation

Carlsen,G.Robert. (1975). Focus: Second edition. mcgraw-hill book company.

Chicago Style (17th ed.) Citation

Carlsen,G.Robert. Focus: Second Edition. New york: mcgraw-hill book company, 1975.

MLA (9th ed.) Citation

Carlsen,G.Robert. Focus: Second Edition. mcgraw-hill book company, 1975.

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