Gaya APA
Clay, H., H. (1961).
The Public Health Inspector's Handbook A Manual for Public Health Officers (Tenth Edition).
London:
H.K.lewis & Co.Ltd.
Gaya MLA
Clay, H., H..
The Public Health Inspector's Handbook A Manual for Public Health Officers.
Tenth Edition
London:
H.K.lewis & Co.Ltd,
1961.
Lawas.