APA Style

Ackroyd, N., Lorimer, R. (1994). Global navigation : A GPS user's guide / Neil Ackroyd and Robert Lorimer (2). London: Lloyd\'s of London Press.

MLA Style

Ackroyd, Neil., Lorimer, Robert. "Global navigation : A GPS user's guide / Neil Ackroyd and Robert Lorimer". 2 London: Lloyd\'s of London Press, 1994. Textbook ห้องสมุดทั่วไป.