American Psychological Association 6th edition

Gutiérrez, R., Rodriguez, J., & Sáez, A. J. (n.d.). Approximation of hypergeometric functions with matricial argument through their development in series of zonal polynomials.

ISO-690 (author-date, English)

GUTIÉRREZ, R., RODRIGUEZ, J. and SÁEZ, A. J., [no date]. Approximation of hypergeometric functions with matricial argument through their development in series of zonal polynomials. .

Modern Language Association 9th edition

Gutiérrez, R., J. Rodriguez, and A. J. Sáez. Approximation of Hypergeometric Functions With Matricial Argument through Their Development in Series of Zonal Polynomials.

Mohr Siebeck - Recht (Deutsch - Österreich)

Gutiérrez, R./Rodriguez, J./Sáez, A. J.: Approximation of hypergeometric functions with matricial argument through their development in series of zonal polynomials,

Emerald - Harvard

Gutiérrez, R., Rodriguez, J. and Sáez, A.J. (n.d.). “Approximation of hypergeometric functions with matricial argument through their development in series of zonal polynomials”.

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