APA (7th ed.) Citation

Smith, C., & Bermejo Marcos, M. (1971). Collins Spanish-English, English-Spanish dictionary. Collins.

Chicago Style (17th ed.) Citation

Smith, Colin, and Manuel Bermejo Marcos. Collins Spanish-English, English-Spanish Dictionary. London: Collins, 1971.

MLA (9th ed.) Citation

Smith, Colin, and Manuel Bermejo Marcos. Collins Spanish-English, English-Spanish Dictionary. Collins, 1971.