APA (7th ed.) Citation

Hill, I. D., & Hill, P. A. (1968). Random times for activity sampling: 12 hour & 24 hour tables. Institute of Work Study Practitioners.

Chicago Style (17th ed.) Citation

Hill, Ian David, and Peter A. Hill. Random Times for Activity Sampling: 12 Hour & 24 Hour Tables. Enfield: Institute of Work Study Practitioners, 1968.

MLA (9th ed.) Citation

Hill, Ian David, and Peter A. Hill. Random Times for Activity Sampling: 12 Hour & 24 Hour Tables. Institute of Work Study Practitioners, 1968.

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