APA

Bills G. D., Vallejo C & Troike R. C. (1969). An introduction to spoken bolivian quechua. Austin: Institute of Latin American Studies by the University of Texas Press |.

Chicago

Bills Garland D, Vallejo C and Troike Rudolph C. 1969. An introduction to spoken bolivian quechua. Austin: Institute of Latin American Studies by the University of Texas Press |.

Harvard

Bills G. D., Vallejo C and Troike R. C. (1969). An introduction to spoken bolivian quechua. Austin: Institute of Latin American Studies by the University of Texas Press |.

MLA

Bills Garland D, Vallejo C and Troike Rudolph C. An introduction to spoken bolivian quechua. Austin: Institute of Latin American Studies by the University of Texas Press |. 1969.