APA (7e ed.) Bronvermelding

De Leon, F. P. (1965). Skipping time: Piano solo for young beginners. Llanes Sisters Music Store.

Chicago (17e ed.) Bronvermelding

De Leon, Felipe Padilla. Skipping Time: Piano Solo for Young Beginners. Manila: Llanes Sisters Music Store, 1965.

MLA (9e ed.) Bronvermelding

De Leon, Felipe Padilla. Skipping Time: Piano Solo for Young Beginners. Llanes Sisters Music Store, 1965.