APA (7e ed.) Bronvermelding

SWINDOLL CHARLES R. (1985). THREE STEPS FORWARD TWO STEPS BACK. BANTAM BOOKS.

Chicago (17e ed.) Bronvermelding

SWINDOLL CHARLES R. THREE STEPS FORWARD TWO STEPS BACK. NEW YORK: BANTAM BOOKS, 1985.

MLA (9e ed.) Bronvermelding

SWINDOLL CHARLES R. THREE STEPS FORWARD TWO STEPS BACK. BANTAM BOOKS, 1985.