APA
Daniel Ling, . (1978). Cumulative record of speech skill acquisition. The Alexander Graham Bell Asso. for the Deaf, Washington: .
Chicago
Daniel Ling, . 1978. Cumulative record of speech skill acquisition. The Alexander Graham Bell Asso. for the Deaf, Washington: .
Harvard
Daniel Ling, . (1978). Cumulative record of speech skill acquisition. The Alexander Graham Bell Asso. for the Deaf, Washington: .
MLA
Daniel Ling, . Cumulative record of speech skill acquisition. The Alexander Graham Bell Asso. for the Deaf, Washington: . 1978.