Cita APA (7th ed.)

Singer , E. (1969). The practical approach to skill analysis. Mc Graw Hill.

Cita Chicago (17th ed.)

Singer , Edwin. The Practical Approach to Skill Analysis. London: Mc Graw Hill, 1969.

Cita MLA (9th ed.)

Singer , Edwin. The Practical Approach to Skill Analysis. Mc Graw Hill, 1969.