APA (7e ed.) Bronvermelding

KRISHNA S. (1968). POSITIVE MARKETING. HEMKONT PRESS.

Chicago (17e ed.) Bronvermelding

KRISHNA S. POSITIVE MARKETING. NEW DELHI: HEMKONT PRESS, 1968.

MLA (9e ed.) Bronvermelding

KRISHNA S. POSITIVE MARKETING. HEMKONT PRESS, 1968.