Cita APA

Mock, V. E. (1982). Subtraction drill for levels 1-3. David S. Lake Publishers.

Citación estilo Chicago

Mock, Valerie E. Subtraction Drill for Levels 1-3. Belmont, Calif: David S. Lake Publishers, 1982.

Cita MLA

Mock, Valerie E. Subtraction Drill for Levels 1-3. David S. Lake Publishers, 1982.

Warning: These citations may not always be 100% accurate.