APA (7e ed.) Bronvermelding

Stahl, W., Wien, D., & Leib, B. M. (1967). Hamburg from 7 to 7: An unusual Guide to an unusual city / Walter Stahl; Dieter Wien. Seehafen-Verlag.

Chicago (17e ed.) Bronvermelding

Stahl, Walter, Dieter Wien, en Betty; McKerrow Leib. Hamburg from 7 to 7: An Unusual Guide to an Unusual City / Walter Stahl; Dieter Wien. Hamburg: Seehafen-Verlag, 1967.

MLA (8e ed.) Bronvermelding

Stahl, Walter, et al. Hamburg from 7 to 7: An Unusual Guide to an Unusual City / Walter Stahl; Dieter Wien. Seehafen-Verlag, 1967.