Gaya APA
CLAY, H, H. (1961).
THE PUBLIC HEALTH INSPECTOR'S HANDBOOK : A MANUAL FOR PUBLIC HEALTH OFFICERS (TENTH).
UK:
H.K. LEWIS &CO.
Gaya MLA
CLAY, HENRY, H..
"THE PUBLIC HEALTH INSPECTOR'S HANDBOOK : A MANUAL FOR PUBLIC HEALTH OFFICERS".
TENTH
UK:
H.K. LEWIS &CO,
1961.
Text.