Cita APA (7th ed.)

Tones, K., Tilford, S., & Robinson, Y. K. (1990). Health education: Effectiveness and efficiency. Chapman and Hall.

Cita Chicago (17th ed.)

Tones, Keith, Sylvia Tilford, i Yvonne Keeley Robinson. Health Education: Effectiveness and Efficiency. London: Chapman and Hall, 1990.

Cita MLA (9th ed.)

Tones, Keith, et al. Health Education: Effectiveness and Efficiency. Chapman and Hall, 1990.