Dyfyniad APA

Block, C. C. (1997). Literacy difficulties: Diagnosis and instruction. Fort Worth, TX: Harcourt Brace College.

Dyfyniad Arddull Chicago

Block, Cathy Collins. Literacy Difficulties: Diagnosis and Instruction. Fort Worth, TX: Harcourt Brace College, 1997.

Dyfyniad MLA

Block, Cathy Collins. Literacy Difficulties: Diagnosis and Instruction. Fort Worth, TX: Harcourt Brace College, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.