Gaya APA
Supriyanto, W., J.Clendinning, . (1979).
Principles and use of surveying instruments .
London:
Van Nonstrand Reinhold Company.
Gaya MLA
Supriyanto, Wahyu., J.Clendinning, .
"Principles and use of surveying instruments".
London:
Van Nonstrand Reinhold Company,
1979.
Text.