APA (7th ed.) Zitazioa

Mayer, L. V. Fundamentals of voice & diction (10th ed.). Brown & Benchmark.

Chicago Style (17th ed.) Zitazioa

Mayer, Lyle V. Fundamentals of Voice & Diction. 10th ed. Iowa: Brown & Benchmark.

MLA (9th ed.) Zitazioa

Mayer, Lyle V. Fundamentals of Voice & Diction. 10th ed. Brown & Benchmark.