Cita APA (7th ed.)

Piek, J. P. (2006). Infant motor development (1a. ed.). Human Kinetics.

Cita Chicago (17th ed.)

Piek, Jan P. Infant Motor Development. 1a. ed. Champaign: Human Kinetics, 2006.

Cita MLA (9th ed.)

Piek, Jan P. Infant Motor Development. 1a. ed. Human Kinetics, 2006.