APA (7e ed.) Bronvermelding

WALTERS LILLY. (2000). SECRETS OF SUPERSTAR SPEAKERS: WISDOM FROM GREATEST MOTIVATORS OF OUR TIME AND WITH THOSE ? TATA MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

WALTERS LILLY. SECRETS OF SUPERSTAR SPEAKERS: WISDOM FROM GREATEST MOTIVATORS OF OUR TIME AND WITH THOSE ? NEW DELHI: TATA MCGRAW-HILL, 2000.

MLA (9e ed.) Bronvermelding

WALTERS LILLY. SECRETS OF SUPERSTAR SPEAKERS: WISDOM FROM GREATEST MOTIVATORS OF OUR TIME AND WITH THOSE ? TATA MCGRAW-HILL, 2000.