APA (7th ed.) Citation

Ackroyd, N., & Lorimer, R. (1990). Global navigation: A GPS user's guide. Lloyd's of London Press.

Chicago Style (17th ed.) Citation

Ackroyd, Neil, and Robert Lorimer. Global Navigation: A GPS User's Guide. London ; New York: Lloyd's of London Press, 1990.

MLA (9th ed.) Citation

Ackroyd, Neil, and Robert Lorimer. Global Navigation: A GPS User's Guide. Lloyd's of London Press, 1990.