Gaya APA
Allen, David. (2015).
Getting Things Done the Art of Stress-Free Productivity .
UK:
Piatkus.
Gaya Chicago
Allen, David.
Getting Things Done the Art of Stress-Free Productivity.
UK:
Piatkus,
2015.
Text.
Gaya MLA
Allen, David.
Getting Things Done the Art of Stress-Free Productivity.
UK:
Piatkus,
2015.
Text.
Gaya Turabian
Allen, David.
Getting Things Done the Art of Stress-Free Productivity.
UK:
Piatkus,
2015.
Print.