APA (7th ed.) Citation

McCullough, E. (1911). Engineering as a vocation. David Williams company.

Chicago Style (17th ed.) Citation

McCullough, Ernest. Engineering as a Vocation. New York: David Williams company, 1911.

MLA (9th ed.) Citation

McCullough, Ernest. Engineering as a Vocation. David Williams company, 1911.

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