Cita APA (7th ed.)

Lautzenheiser, T. a. (1999). Essential elements 2000 - Horn book 1. Hal-Leonard Corp.

Cita Chicago (17th ed.)

Lautzenheiser, Tim...[et al]. Essential Elements 2000 - Horn Book 1. Milwaukee: Hal-Leonard Corp, 1999.

Cita MLA (9th ed.)

Lautzenheiser, Tim...[et al]. Essential Elements 2000 - Horn Book 1. Hal-Leonard Corp, 1999.