APA (7e ed.) Bronvermelding

KARRASS GARY. (1985). NEGOTIATE TO CLOSE HOW TO MAKE MORE SUCCESSFUL DEALS. SIMON & SCHUSTER INC.

Chicago (17e ed.) Bronvermelding

KARRASS GARY. NEGOTIATE TO CLOSE HOW TO MAKE MORE SUCCESSFUL DEALS. NEW YORK: SIMON & SCHUSTER INC, 1985.

MLA (9e ed.) Bronvermelding

KARRASS GARY. NEGOTIATE TO CLOSE HOW TO MAKE MORE SUCCESSFUL DEALS. SIMON & SCHUSTER INC, 1985.