APA

Ranganathan S R,, . (1990). A descriptive account of the colon classification. Bangalore: Sarada Ranganathan Endowment for Library Science.

Chicago

Ranganathan S R,, . 1990. A descriptive account of the colon classification. Bangalore: Sarada Ranganathan Endowment for Library Science.

Harvard

Ranganathan S R,, . (1990). A descriptive account of the colon classification. Bangalore: Sarada Ranganathan Endowment for Library Science.

MLA

Ranganathan S R,, . A descriptive account of the colon classification. Bangalore: Sarada Ranganathan Endowment for Library Science. 1990.