APA Style
Ridley, John. (1999).
Safety at work .
Oxford:
Butterworth Heinemann.
Chicago Style
Ridley, John.
Safety at work.
Oxford:
Butterworth Heinemann,
1999.
Buku Teks.
MLA Style
Ridley, John.
Safety at work.
Oxford:
Butterworth Heinemann,
1999.
Buku Teks.
Turabian Style
Ridley, John.
Safety at work.
Oxford:
Butterworth Heinemann,
1999.
Buku Teks.