Gaya APA
Checkland, Peter. (1999).
System Thinking, Systems Practice : Includes a 30-year retrospective .
England:
John Wiley & Sons.
Gaya Chicago
Checkland, Peter.
System Thinking, Systems Practice : Includes a 30-year retrospective.
England:
John Wiley & Sons,
1999.
Buku.
Gaya MLA
Checkland, Peter.
System Thinking, Systems Practice : Includes a 30-year retrospective.
England:
John Wiley & Sons,
1999.
Buku.
Gaya Turabian
Checkland, Peter.
System Thinking, Systems Practice : Includes a 30-year retrospective.
England:
John Wiley & Sons,
1999.
Buku.