APA (7e ed.) Bronvermelding

Atwater, R., Atwater, F., Kessel, E., & Lawson, R. (1949). Mr. Poppers Pinguine (11.-15. Tausend.). Alfred Holz Verlag.

Chicago (17e ed.) Bronvermelding

Atwater, Richard, Florence Atwater, Elisabeth Kessel, en Robert Lawson. Mr. Poppers Pinguine. 11.-15. Tausend. Berlin: Alfred Holz Verlag, 1949.

MLA (8e ed.) Bronvermelding

Atwater, Richard, et al. Mr. Poppers Pinguine. 11.-15. Tausend. Alfred Holz Verlag, 1949.