Gaya APA
Sprague, J. (2020).
Theory of Knowledge : Skills for Success (For the IB Diploma) 2nd edition (2).
United Kingdom:
Hodder Education.
Gaya MLA
Sprague, John.
"Theory of Knowledge : Skills for Success (For the IB Diploma) 2nd edition".
2
United Kingdom:
Hodder Education,
2020.
Text.