Cita APA

Abastillas, V. N. (1996). Introduction to astronomy. Phoenix Pub.

Citación estilo Chicago

Abastillas, Vivencio N. Introduction to Astronomy. Quezon City: Phoenix Pub, 1996.

Cita MLA

Abastillas, Vivencio N. Introduction to Astronomy. Phoenix Pub, 1996.

Warning: These citations may not always be 100% accurate.