APA (7th ed.) Citation

Pine Forge press, Maisel, R., & Persell, C. (1995). How sampling works. Pine Forge press.

Chicago Style (17th ed.) Citation

Pine Forge press, Richard Maisel, and Caroline Persell. How Sampling Works. London: Pine Forge press, 1995.

MLA (8th ed.) Citation

Pine Forge press, et al. How Sampling Works. Pine Forge press, 1995.