APA (7th ed.) Citation

Friedrichs, H. (1961). Peter Pim and Billy Ball.

Chicago Style (17th ed.) Citation

Friedrichs, Hildegard. Peter Pim and Billy Ball. 1961.

MLA (9th ed.) Citation

Friedrichs, Hildegard. Peter Pim and Billy Ball. 1961.

Warning: These citations may not always be 100% accurate.