APA (7th ed.) Citation

Hugo, W. B. (1972). An introduction to microbiology. William Heinemann medical books.

Chicago Style (17th ed.) Citation

Hugo, W. B. An Introduction to Microbiology. London: William Heinemann medical books, 1972.

MLA (9th ed.) Citation

Hugo, W. B. An Introduction to Microbiology. William Heinemann medical books, 1972.