APA (7th ed.) Citation

Osborne, M. E. (1979). Southeast Asia: An introductory history. George Allen and Unwin.

Chicago Style (17th ed.) Citation

Osborne, Milton E.. Southeast Asia: An Introductory History. Sydney [etc.]: George Allen and Unwin, 1979.

MLA (9th ed.) Citation

Osborne, Milton E.. Southeast Asia: An Introductory History. George Allen and Unwin, 1979.