Lua APA (7ú heag.)

Hakkinen, V. (1972). EEG vigilance measurement and loudness discrimination in humans during drowsy states. Univ. of Helsinki.

Lua i Stíl Chicago (17ú heag.)

Hakkinen, Veikko. EEG Vigilance Measurement and Loudness Discrimination in Humans During Drowsy States. Helsinki: Univ. of Helsinki, 1972.

Lua MLA (8ú heag.)

Hakkinen, Veikko. EEG Vigilance Measurement and Loudness Discrimination in Humans During Drowsy States. Univ. of Helsinki, 1972.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.