APA

R.R. Bowker Company, .Ulrich's International Periodicals Directory. Twenty-third Edition 1984. vol. 2 n-z. Nueva York: R.R Bowker Company.

Chicago

R.R. Bowker Company, .Ulrich's International Periodicals Directory. Twenty-third Edition 1984. vol. 2 n-z. Nueva York: R.R Bowker Company.

Harvard

R.R. Bowker Company, .Ulrich's International Periodicals Directory. Twenty-third Edition 1984. vol. 2 n-z. Nueva York: R.R Bowker Company.

MLA

R.R. Bowker Company, .Nueva York: R.R Bowker Company. .