Gaya APA
English, J., Houghton, R. (1983).
Police training manual : fourth edition (1983) (4th ed).
Singpore:
McGraw Hill.
Gaya MLA
English, J.., Houghton, R..
"Police training manual : fourth edition (1983)".
4th ed
Singpore:
McGraw Hill,
1983.
Text.