APA (7th ed.) Citation

Hemmings, R. (1975). Leapfrogs action books: A mathematics series for middle and secondary schools. Hutchinson for Leapfrogs.

Chicago Style (17th ed.) Citation

Hemmings, Ray. Leapfrogs Action Books: A Mathematics Series for Middle and Secondary Schools. England: Hutchinson for Leapfrogs, 1975.

MLA (9th ed.) Citation

Hemmings, Ray. Leapfrogs Action Books: A Mathematics Series for Middle and Secondary Schools. Hutchinson for Leapfrogs, 1975.

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