Practical surveying :
a text-book for students preparing for examinations or for survey work in the colonies /
by George Wm. Usill.

APA Citation

Usill, G. William. (1920). Practical surveying: a text-book for students preparing for examinations or for survey work in the colonies. 12 ed., rev. / London: C. Lockwood and Son.

MLA Citation

Usill, George William. Practical Surveying: a Text-book for Students Preparing for Examinations Or for Survey Work In the Colonies. 12 ed., rev. / London: C. Lockwood and Son, 1920.

Warning: These citations may not always be complete (especially for serials).