Services, E. L. A Basic Course English 900: Three. The Macmillan Company.
Chicago Style (17th ed.) CitationServices, English Language. A Basic Course English 900: Three. The Macmillan Company.
MLA (8th ed.) CitationServices, English Language. A Basic Course English 900: Three. The Macmillan Company.
Warning: These citations may not always be 100% accurate.