APA (7e ed.) Bronvermelding

Clapp, W. C. (1977). A vocabulary of the Igorot as spoken by the Bontok Igorots. Igorot-English and Eglish-Igorot [microform]. Photoduplication Service.

Chicago (17e ed.) Bronvermelding

Clapp, Walter Clayton. A Vocabulary of the Igorot as Spoken by the Bontok Igorots. Igorot-English and Eglish-Igorot [microform]. Quezon City: Photoduplication Service, 1977.

MLA (9e ed.) Bronvermelding

Clapp, Walter Clayton. A Vocabulary of the Igorot as Spoken by the Bontok Igorots. Igorot-English and Eglish-Igorot [microform]. Photoduplication Service, 1977.