APA (7th ed.) Citation

Pooley, R. C., Dunning, S., Grommon, A. H., Katterjoin, E., Lowers, V. B., Magdanz, F., & Niles, O. S. (1964). Focus. Josephina Niggli.

Chicago Style (17th ed.) Citation

Pooley, Robert C., Stephen Dunning, Alfred H. Grommon, Elsie Katterjoin, Virginia Belle Lowers, Frances Magdanz, and Olive S. Niles. Focus. Toronto: Josephina Niggli, 1964.

MLA (9th ed.) Citation

Pooley, Robert C., et al. Focus. Josephina Niggli, 1964.