APA Style

Checkland, P., Poulter, J. (2009). Learning for action: A Short definitive account of soft systems methodology and its use for practitioners, teachers and students . England: John Wiley & Sons.

MLA Style

Checkland, Peter., Poulter, John. "Learning for action: A Short definitive account of soft systems methodology and its use for practitioners, teachers and students". England: John Wiley & Sons, 2009. Text.