APA (7e ed.) Bronvermelding

SETHI SUBHASH C. (2003). TWENTY FIVE MINUTES TO ENHANCE YOUR PERFORMANCE. INDIANA BOOKS.

Chicago (17e ed.) Bronvermelding

SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR PERFORMANCE. NEW DELHI: INDIANA BOOKS, 2003.

MLA (9e ed.) Bronvermelding

SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR PERFORMANCE. INDIANA BOOKS, 2003.